My girlfriend and I can no longer share a bed.

I've been in a relationship with my girlfriend for three years now, and for context, she experienced sexual assault before we started dating. Throughout our time together, we've shared a bed every night. However, in the past couple of months, she's been struggling with her trauma again. As a result, I've found myself sleeping on the sofa or in the spare room each night. Recently, I tried sharing the bed with her again, but both nights, she woke me up in the early hours having a panic attack. This is largely due to my breathing and the noises I make while I sleep, which she says remind her of that traumatic night. Although she wears AirPods to help mask the sounds, it seems I’m still too loud for her to feel comfortable. I'm worried this is starting to put a strain on our relationship, and I miss the closeness we shared while sleeping together. I'd appreciate any advice on how I might support her healing process. I understand this could be the situation moving forward, and I'm open to that possibility, but I want to help her as much as I can.