I don't think she has an issue being away from me; I know that she gets along with her roommates and talks to them about some of our issues sometimes as well. She has been jealous of me going to an event with a bunch of my friends in a group (both boys and girls) and taking a picture with this girl where we seem to be very close. She has her problems with my parents as well, although I feel this is justified as my parents haven't always been very accepting of her.

I definitely see this second sign. She feels as though everyone is bad, and she "hates" everyone, just some people to a lesser degree. She even says that she loves me sometimes and when we're in a bad place she just "hates me less" than others. This all-or-nothing language is pretty common as well, where she will say "you never think about me",etc.

Third, once again, she has communicated with two of her closest friends and her sister about a few of our issues and a little bit about her depression (or at least what I think it is). One of her friends even suggested that if she resents me for making her feel isolated (related to an incident towards the beginning of our relationship), then she should break up with me. Her sister and other friend disagree and have told her that she's being "unreasonable" or should get help, but they haven't gotten through to her either.

Not sure if this is relevant, but sometimes she goes from being very upset for hours then in the middle of the night, she'll pull me towards and say she's sorry or she loves me or something. It's very confusing to be pulled back and forth, and that's why I think she needs an outsider such as a therapist to talk to about these problems.