I'm sorry you had to go through this. You have been really brave to open up to L and try to work through some attachment stuff. It's so hard when you hit bumps with her and feel activated by them.

It sounds like you have worked through the issue with her, which has been the most important part of navigating ruptures, in my experience. As for how long it takes to get over it, it has really varied from hours to months for me. There is just no way to know. It sounds like you are willing to try to trust again, so you may start to feel better gradually as that trust starts to rebuild again. This is especially something to observe and talk about when you're with L. (How do you feel? What are you sensing from her? Is something from your past being activated that might not 100% have to do with L and the current situation?)

When I feel fragile and exhausted and just generally emotionally yucky outside of session, I try to focus on pleasant distractions and soothing sensory things. The distractions help keep my brain occupied until I am in a place where I can use my wise mind again, and the sensory stuff helps my body know that I'm safe and can relax, which helps my whole system feel calmer. I know you like crocheting/crafting, so maybe start a new project? And then try warm, cozy clothes, a hot shower, a nice candle, relaxing music, a blanket, or whatever is pleasing to your particular senses. I hope it gets easier! You're clearly working very hard.