Dear OP,
I understand where you are coming from. Although I am not married and I do not have children, I can relate when it comes to being ostracized for expressing the faith in which I believe, and also living my life in the way that my faith calls me to live.
First, allow me to say that the fact that you stay at home is enough for recognition. It is a humble thing for a mother to stay at home and be with her children, it is a great thing really. So, don't look at yourself as some sort of backwards character because you are doing what is the best for your children.
Secondly, it is hard to do the right thing all of the time. It is one of the hardest things in life to do. Yet, we also believe that we can receive sufficient grace to perform all of the necessary duties in life. Rely on God, and He will show you that He is the only Friend you will ever need. Plus, you have a whole bunch of friends in heaven who are willing to pray for you and to help you in your struggle. Saint Anthony has always been a good friend to me, as well as Saint Benedict- Saint Francis being another. Find your friend, he or she is waiting for you to discover them.
Thirdly, allow me to be the "devil's advocate" here :devil2:. When it comes to being able to convert people and to have someone see the same truth that you see yourself, understand that it was your own personal decision to hold the faith you profess. The Catholic Church is the True Church outside of which there is no Salvation, yes. This truth is not relative. Yet, "perceived" truth is a relative thing. Some people want to believe one thing, others another. It is a personal decision that they have made. With this country being the way that it is and without a universal acceptance of the Truth, the whole idea of Catholicism in general is so far-fetch'd to people that it is more effort than it is worth to constantly convey the truth to an individual (or group of individuals) who does/do not want to listen. St. Paul tells us to warn others "once or twice"! Imagine if he said to take a whole lifetime to warn a single individual before avoiding them... My point in this paragraph is to work on yourself first. We all have a lot of things that we need to fix about ourselves. Conversions of outside individuals, I have found, are normally reserved for the priestly class. Laymen and laywomen are not normally reserved for these sorts of works. You have a family! They will be more than willing to listen to you more than all of your husband's friends will ever care to. My mom had a big impact on me.
Lastly, it is good to abhor human respect. If that means not having friends, we have to gird our loins and accept that people in this age are just not that friendly. We have become so selfish that we will reject anything not remotely close to what we desire for ourselves. I have lost most of the "friends" that I used to have. I say, good riddance to the lot of you. What kind of positive influence are these people having? Obviously, not too much of it, because you (just like I do) have to avoid people in order to avoid sin. Ah, what a terrible age we are in! So devoid of love, so devoid of true love, yes.
Find your friend. He or she is waiting for you.