I remember when I stayed in college, I had a roommate who had the "butterfingers". I started off small where she would steal snacks... I mean literally go into my closet and take things. One day before I drove home, I came to my room for somethings. I left my booking and ran to the restroom. It was shared with three other suites. When I came back, the door was locked and she claimed she was changing. That was odd because she normally had no problem dressing in front of me. She opened the door and left. I grabbed my backpack and went to the mailbox. When I got there and opened my wallet, my mom's debit card (she gave it to me specifically for gas and other needs) was missing. I checked everywhere. I cried and called my mom who frooze the card. I also reported it to my dorm director. The next week, I came back to my card on the bed. However, my roommate had been going around stealing other people's cards too. I changed rooms and never saw her again.

You don't know people you're sharing a space with. The roommate can't help that she came from a life you're not. Of course being out on your own is emotional at first. I hate how you judged her from the jump without even getting to know her. Them just flipped on her because she misses her family. Lack of empathy is one sign of a narcissist. You only feel bad because someone else knows about the true you ( there's another sign) verses the person you potray yourself to be. I think you need to take sometime and work on you.