So a Traditional Catholic priest has this pagan idol in his home?

Unbelievable.

Woe to you that call evil good, and good evil: that put darkness for light, and light for darkness: that put bitter for sweet, and sweet for bitter. Woe to you that rue wise in your own eyes, and prudent in your own conceits. -Isaias 5:20-21
Woe to them that are of a double heart and to wicked lips, and to the hands that do evil, and to the sinner that goeth on the earth two ways. –Ecclesiasticus 2:14

No man can serve two masters. For either he will hate the one, and love the other: or he will sustain the one, and despise the other. You cannot serve God and mammon. –Matthew 6:24

That with one mind, and with one mouth, you may glorify God and the Father of our Lord Jesus Christ. –Romans 15:6

The double-minded man is inconstant in all his ways. -James 1:8

Notice what's in the left hand.

1 Sed et serpens erat callidior cunctis animantibus terræ quæ fecerat Dominus Deus. Qui dixit ad mulierem: Cur præcepit vobis Deus ut non comederetis de omni ligno paradisi?	1 Now the serpent was more subtle than any of the beasts of the earth which the Lord God had made. And he said to the woman: Why hath God commanded you, that you should not eat of every tree of paradise?	1 Of all the beasts which the Lord God had made, there was none that could match the serpent in cunning. It was he who said to the woman, What is this command God has given you, not to eat the fruit of any tree in the garden?
2 Cui respondit mulier: De fructu lignorum, quæ sunt in paradiso, vescimur:	2 And the woman answered him, saying: Of the fruit of the trees that are in paradise we do eat:	2 To which the woman answered, We can eat the fruit of any tree in the garden
3 de fructu vero ligni quod est in medio paradisi, præcepit nobis Deus ne comederemus, et ne tangeremus illud, ne forte moriamur.	3 But of the fruit of the tree which is in the midst of paradise, God hath commanded us that we should not eat; and that we should not touch it, lest perhaps we die.	3 except the tree in the middle of it; it is this God has forbidden us to eat or even to touch, on pain of death.
4 Dixit autem serpens ad mulierem: Nequaquam morte moriemini.	4 And the serpent said to the woman: No, you shall not die the death.	4 And the serpent said to her, What is this talk of death?
5 Scit enim Deus quod in quocuмque die comederitis ex eo, aperientur oculi vestri, et eritis sicut dii, scientes bonum et malum.	5 For God doth know that in what day soever you shall eat thereof, your eyes shall be opened: and you shall be as Gods, knowing good and evil.	5 God knows well that as soon as you eat this fruit your eyes will be opened, and you yourselves will be like gods, knowing good and evil.
6 Vidit igitur mulier quod bonum esset lignum ad vescendum, et pulchrum oculis, aspectuque delectabile: et tulit de fructu illius, et comedit: deditque viro suo, qui comedit.	6 And the woman saw that the tree was good to eat, and fair to the eyes, and delightful to behold: and she took of the fruit thereof, and did eat, and gave to her husband who did eat.	6 And with that the woman, who saw that the fruit was good to eat, saw, too, how it was pleasant to look at and charmed the eye, took some fruit from the tree and ate it; and she gave some to her husband, and he ate with her.
7 Et aperti sunt oculi amborum; cuмque cognovissent se esse nudos, consuerunt folia ficus, et fecerunt sibi perizomata.	7 And the eyes of them both were opened: and when they perceived themselves to be naked, they sewed together fig leaves, and made themselves aprons.	7 Then the eyes of both were opened, and they became aware of their nakedness; so they sewed fig-leaves together, and made themselves girdles.

Notice the right hand detail



Vitarka: Teaching or Discussion Mudra
 
Philippe Lissac / Godong / Getty Images
The vitarka (teaching or discussion) mudra is used with Buddhist iconography to symbolize the transmission of the dharma, or the truth teachings of the Buddha. In this mudra, the thumb and index fingers touch, creating a circle that symbolizes an uninterrupted flow of wisdom. The other three fingers pointing up towards the heavens with the palm facing outward. This is held at around chest level.
Best placement: This mudra can invite receiving and discussing teachings for growth and awakening into your life. Rooms such as a library, study, and or the Gen/Knowledge area of the home would benefit from imagery of this mudra.

LOL.   Trying to give benefit of the doubt.  There are various national/cultural depictions of Our Lady, so I thought this could be a possibility.  She also appears to be standing on s serpent?  It's tough to make it out.

That was me, by the way (didn't realize this was in the αnσnymσus forum).  
It's very, very doubtful that it's a depiction of Our Lady. It appears to be standing on a lily, which is typical of Oriental religious icons. You can see some examples here and compare it to the statue. It also appears to possess masculine features more in line with the Buddha commonly depicted.

 The standing Buddha is indicative of being stationary, with both feet planted firmly side-by-side. During this position, the Buddha has stopped, and the reason for this halt can be determined by the mudra of the hands. Most often, the standing Buddha is repelling conflict or rising from meditation to teach the Four Noble Truths after reaching nirvana.
   In the Buddhist Tantric tradition, the right hand represents skillful, focused method of action and the active male principle. The left hand symbolizes wisdom, emptiness and the contemplative female principle. Thus, we find many images of the Buddha where his right hand is portrayed in gestures actively signifying teaching, protection and granting blessings, while his left hand reposes meditatively upon his lap.
   Sakyamuni’s first sermon on the Four Noble Truths, delivered after attaining enlightenment at Sarnath was a moment of seminal importance. The occasion signifies his setting in motion the Wheel of Dharma, an event captured by the Dharmachakra Mudra.
   The tips of the index fingers and thumbs touching each other form a circle that represents the Wheel – a metaphysical union of right action and wisdom. The three extended fingers of each hand are also rich in symbolism. On the right hand, the middle finger represents the Buddha’s audience, the ring finger stands for the few who realize his teachings, while the little finger is the Great Vehicle (Mahayana). The fingers of the left hand represent the Buddha himself, the law of Dharma and the Sangha.