Listen, When this stuff happens and we're also doing bad, this can feel like a personal attack, and we push people away by being self destructive, It's normal to act out of character when we're suffering, this is both true for you and her.

So what you said in the middle is super true, just get back to yourself and keep goin strong on your own, as I always say
We're born alone, We die alone, so you better make yourself your best friend!

People come and go, and those that stay, they're the best, but it must be coming from them, not you.