Now, I don't post here often. But this is a serious problem and I need an outside opinion on the matter.
Now, a friend of mine up until about a week or so was an atheist who disliked the idea of an omnipotent being watching over her and hated going to church with her family. She then went on a weeks holiday, to a camp in the north. I later discovered this was a christian camp. When she returned she was acting peculiar, different from usual. To me, she seemed closed off and less loving. At first I brushed it off as nothing.
But now she is heavily religious, she loves going to church, claims to feel the joy that God brings to her and that God guides her path and helps makes her decisions. Also, she now proclaims that God is her one and true love, above all. I was concerned with this drastic change on her views and have gathered up a group of people who feel the same way about her. We have all sworn to do what it takes to find out what has happened. Now, that may seem a tad drastic to all of you. But, she has changed massively; we wouldn't do this if it wasn't as bad as it is.
Now, the escapist. What do you think of this situation? Do you have any suggestions on how we should proceed?
I have some quotes, from Msn and Facebook; which represent how 'devoted' she is to this religion now, and before she left.
Before the camping trip:
"i dont get along with my parents, and i dont believe in "god"

im also being forced to go camping on the 26th!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! - :'("
"thn today forced go church!!!!!!!! omg HATE HATE HATE- but now on computer so im happy"
After:
"************* September 5 at 8:37pm
I'm not scared of death at all, and i won't let you take God away form me cos you can't cos he'll always be there for me!

And God helps me to make decisions and guides my path, x"
"church is goood, strangly enough."
I'd like to point out, that I'm not against christians or members of any religion. But she was only gone for one week and it is like she has changed completely. So I'm concerned and asking for help.