Hi NinaBean! Welcome!
Thank you for posting to our online family. I'm so glad you did.

. This is an online family especially dedicated to helping navigate those murky waters of having a pwBPD in our lives. There are a lot of listening ears and caring hearts here!
On the right hand side of the board under
Healing When a Family Member Has BPD, you will find some information about BPD. If you click on any of the sentences, they will open up in another window with more information.
Your BPD m-i-l sounds challenging. How does your DH do with her? Do you know if she has been diagnosed with BPD? Regardless of a formal diagnosis or not, when you find it necessary to deal with the traits common to someone with BPD, it is so very hard. As a child growing up with an uBPDm, I well grasp some of the frustration you are going through. Have you read any books about BPD? Here is a good one to start with:
Stop Walking On EggshellsI think it's wonderful that you see the need for boundary setting! Kudos to you! Here is a link I in regards to this:
Setting BoundariesWhen is the next time you anticipate seeing her again? Do you live close by her?
Wools