breaking vegetarians

[lucksack]

I think you should tell her that it's possible to be both against animal abuse and eat meat that has been produced by this abuse, because her not eating meat has very little effect on the abuse, and there are probably better ways to help the cause (namely informing people about facts of animal abuse, such as animal treatment, animal psychology, Christianity's effect, human psychology (the more different something is from us, the harder it is for us to care about them), or donating money to some organization that helps animals somehow, working in such an organization, or something else maybe..).

However, if she anyway feels too bad about eating meat, maybe you could accept her the way she is instead of trying to force changes that might be bad for her on the long run (if she starts eating meat because of pressure from you and then gets guilty conscience etc.).