What Does Support Feel Like

So The Roommate has got her own batch of issues, and she projects the issues she has with her family onto me, and I feel like she is always judging me. One of the things she does is to never be the one to initiate contact. She can walk into the apartment and literally ignore me until I initiate a conversation. Take tonight. She walks in, my door is open, I'm laying down walking TV, and she gets home and goes in the kitchen, munches on her stuff, and never comes over to my door to say hi. It is ALWAYS my job to greet her first. I know some people aren't friends with their roommates, but she was my roommate second. She's been my friend since about 15. And I've told her how depressed I am. I think she thinks she's being empathetic, but subconsciously she seems to judge me and avoid me like I have a disease. Where's my nurturing? Why won't she ask how I am?