I deeply admire your helping both your MIL and your SIL.

Sounds like you are getting burnt out with the challenges your SIL presents, which is not unusual, especially under the circumstances you've described.

It would be helpful if your SIL took more responsibility for her stability, for sure. I am not sure how anyone can force her to do so, unfortunately.

You might find the family NAMI group helpful.
You have to set some boundaries, for your own welfare.

I can see that your willingness to help your MIL automatically intertwines your life with your SIL.

You are kind-hearted. It is important you take care of yourself, too.

I am sorry your are in such a difficult situation. I hope you find some helpful resolutions.


WC