Unreliable girlfriend or other?

So I thought I had a pretty good relationship with this girl I have been with nearly a year, at least for the most part. Whenever depression or such looms over me, she instantly avoids me which worsens my state and I have to deal with it alone. Yet whenever she has problems I make an effort and drive to her house, go to a nearby park and we talk it out.

So this is about the third time and she flat out told me that it made sense for her to avoid me while I seemed to be in a bad mood. Not that I'm aggressive or anything, I'm actually pretty melancholy and pensive. I understand that I'm not fun to be around during those times but for to text me she'll be there for me if I needed her and next day avoiding me deliberately, I'm just about wondering this relationship is worth hanging onto...
Unreliable girlfriend or other?
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