Wobbly nearing the end of active treatment

I've had a better week when it comes to my mental health. It's been relatively stress free. However tonight my niece and nephew were difficult, especially the former. She's 10yrs old and basically had a full on tantrum for two hours. She was extremely rude, aggressive, trashed her room, sobbed & screamed loudly, slammed doors etc for over two hours. My husband wasn't here. I had to get my 18yo son to come and sit with me because if she got sufficiently violent I would not be able to restrain her in my current condition.

Eventually the storm passed, but I've been emotionally wobbly ever since. I'm not coping with the stress of these situations as well as I did before. It's really thrown me, how delicately balanced my equilibrium is. I hope I get stronger as I move through recovery.