She doesn't seem to want to leave. She loves you, and wants to be with you. It sounds like right now she just needs well... a lot of support. I don't know how long you have been getting treatment, but it might not be long enough for her to heal or really accept the calmer you.

When she explodes and gets upset and won't let you near her? Could you maybe write her a letter with reassurances and put it down near her so that she can read it when you aren't in the room? When I'm upset, whether it's for a good reason or not, I really don't want someone else to be near me. I just want to be on my own to let the upset dissipiate on its own. Yet I'll also want reassurance that it'll be ok afterwards. It's rather contradictory.

She might just be doubting your sincerity if you're acting significantly different from how you have in the past. It's hard to learn to trust someone and believe they're genuine when you've been hurt by them in the past. It's a really slow process.

I hope that the two of you can work through things!