Tell yourself, "I won't let her get to me. I'll tell her the cold hard facts, let her know how I feel".

You sound just like me.. whenever someone wrecks me emotionally, I kiss their butt too.

You don't have to trust her to talk to her. Just talk. Is there going to be someone there with you?

Don't be passive, don't be aggressive. Be assertive! Instead of saying "you are" or "you" "you" "you", give OPINIONS and use "I think". ('least, that's what I learned from my counsellor when I had no selfesteem.)