Ugh just when I was feeling comfortable

So I'm in a long distance relationship. We dated before college and honestly he's a great guy good morals and very respectful. Well his car has been breaking and he needs to drive home this weekend (5 hours away). He asked all his friends and no one offered/ said yes. I know he did ask since he never logged off fb and I saw he made a fb post. (I don't use fb but he lets me use his when I'm bored) Well of course this girl offered him to use her car. Now I know this girl and Ik she's talking to a guy buy not dating him. It's just personally I wouldn't trust anyone with my car so idk why she would. I do think she is too comfortable with my bf (ex at a party has walked up and grabbed his beer and drank it- she was not drunk just got there). Besides this I trust him and I am assuming she's just being super nice to him right?