Jungledj, welcome to SR.
Should you trust her? I would think not, she has done nothing to indicate she is trustworthy.
She is doing what addicts do. This was written by the founder of this site, a recovering addict named Jon. It explains clearly what we can expect when we live with anyone in active addiction.
http://www.soberrecovery.com/forums/...ddicts-do.html
Take a read around, feel free to share as you like, it sounds like you are in a bad place and I doubt she is ready to change any time soon. Just know we are here and we care.
Hugs