She posted a poem to go along with the picture in a separate tweet, so I updated the commentary with it.

My interpretation of it is that she's wrestling with feelings of shame from internalized homophobia. The more her girlfriend loves her, and the more she lets herself enjoy it, the deeper she falls into despair when such shameful feelings erupt.

A lot of us sometimes wrestle with this. Even when we think there's nothing wrong with what we are, fact is, we're surrounded by a heteronormative society that for time immemorial has treated us like we're frightening abominations, not to be trusted. It's hard to deprogram that. Even the most tolerant of people sometimes fear becoming one of us, and think of us as concepts instead of people. I'm lucky enough to be bisexual with a lean towards the opposite sex. I feel like I can choose not to wield that part of myself. She wouldn't have that luxury.

If that were my reality, I'm sure I'd feel much the same.