She should see that forcing someone to believe (whatever the belief maybe--Elvis is still living or 2 + 2= 5 or the Doctrines of Catholicism) is not a genuine conversion; therefore it would be correct for her to take to heart that if someone comes to believe is much better than trying to force it.
As for your actions: don't explode, don't yell. Patience is a virtue. Silence when appropriate. It is hard to bite the bullet but, as you said, you love her and I think that by yelling at her it would only cripple the love.
I hope this helps just a tad.
Yes, that did help, a lot. I never thought of letting her know that I'll never believe 2 + 2 = 5 is true, unless I see that 2 apples plus 2 apples clearly amounts to 5 on my plate! I truly am searching for the truth, as honestly as possible. (I read just as much Peter Kreft as Richard Dawkins.)
I never really could explode and I am patient to a fault. Sarcasm, however is one of my strong (weak
Perhaps what I may do (with ulterior motives) is start the conversation about religion and try to convert her
to my sort of science-based agnostic hybrid atheism/pantheism/deism (I don't even know what 'religion' I am.) I could ask her
is reading (she's very concerned with me reading anything by Richard Dawkins, even if its about biology and not even remotely about faith). I could proudly and militantly shove my Christopher Hitchens and Sam Harris books upon her and proceed to vehemently explain how everything she believes is summarily false (of course I would never do that, since proving false anyone's faith is impossible. Somehow, I don't think the talk would last even 1 hour.
On the other hand, perhaps not.