Difficulty sexting with girlfriend

Me and my girlfriend have been dating for 8 months. At the beginning everything was really passionate, as it's usual in the honeymoon phase, now especially due to mental health issues, on both parts, things have cooled down.

Thing is, she reacts to stress by having a lower libido, while I am hypersexual, due to trauma, but my sexual pulsion spikes when I feel bad.

Lately I have fear that I am worthless, and she is feeling a little better, often telling me what she wants to do to me when we meet up. Seeing her like this, I often tried to escalate from flirting to some sexting, asking her if she's in the mood and even if she says she is, things just...Don't escalate. It just keeps being some light flirting... Since she's been coerced into sex before, and I know how that feels, I have not brought it up to avoid making her feel pressured, but I'm starting to feel sad and rejected...

Any advice or personal experience with this?