Facebook question, please help!?

[Madaraxo]

So a couple months ago i deleted my facebook account for personaly reasons, and my ex- friend who has multiple, gave me hers which goes under a different name and she gave me the password for it.
Ive been using it for a while now, ive customized it, made it my own and everything, but recently her and I had a dispute. Today, i tried to log into my facebook and couldnt, and i believe she could have deleted the account out of anger. I made a new one and immidiately contacted my friend and told her the situation with me and my now ex- friend, and she told my ex- friend had posted a question asking, 'why did (my name) delete her account?' SUSPICIOUS EH?
My concern is that she has access to all of my convos and groups, and i have pretty personal stuff on there, so im kinda freaking out.
Is it possible she could have been the one who did this, because I never told her my password for that account.
She has access to the email account, But dont you need to know your current facebook password if you wanted to change it, or delete it? Because you need to confirm it dont you? I never ever told her or anyone else my facebook password!
Oh my god, I know shes going through all my messages right now. Can i possibly sue her if she leaks out any secret info about me???

[C]

It is likely she did it if she had access to the e-mail address on which the facebook account was created. Then she probably could've reset the password and access the account.

[Camille]

Does she have access to the e-mail used to register 'your' Facebook account?

[Help]

If she knows the answers to the security question to reset the password its all hers, She has access to everything you had on there, personal or not. Lesson learned.