Hi Frustratedmum... .and welcome.
You mention in your post that your step-daughter has moved in with her grandmother. Do you consider this to be a safe place for her? If so, it gives you and your husband time to catch your breath.
Yes, it is a safe place for her to be right now. And you are so right about being able to catch our breath. It seems like we haven't been able to do that since we were married.
The problem with her living with her grandmum is she is 18 and still in an high school, so she is missing out on school right now. So she may have to repeat this year again when (if) she comes back home to us. We had to put her in summer school last year just so she could pass to the next grade level. Thank you so much on your post. It helps me knowing there are other families going through this and congrats on the 55 year long marriage! That gives me a lot of hope in all of this.