What's truly tragic, is my parents have fallen into this trap. Not so much that they're protestant, as they still consider themselves Catholics, but their actions are completely Protestant. While they have beautiful statues of Our Lady of Fatima, of Sorrows, of St. Pius the X, of St. Antony of Padua and the Child Christ, and their home enthroned to the Sacred Heart, and while they support all causes Traditional, lately, they've fallen away from Church.
They work work work during the week (they own their own business), when Sunday comes around, they just relax all day. Our family had been put through a fairly large scandal and were treaded unfairly by jealous controlling families at our local SSPX chapel a few years back; the priest, God bless him, was put in a difficult position, but eventually had no spine in standing up for my parents in the end, while he knew they were in the right. I've tried to explain that that's no reason to stop receiving the sacraments. I've encouraged them to go to mass with us, back to the SSPX, to try the CMRI (but they've been brainwashed to believe that sede's are somehow dangerous), anywhere. They never do.
I don't know what else to do. Prayer, of course. I continually offer them up in my rosary and Mass. Maybe you can say a quick Hail Mary and Our Father if you read this for them today.