Hi, Ravenlady57 &

It can really be frustrating and confusing having a family member with BPD, and so many of us on this site know exactly what you are going through! When a family member has BPD, the illness can negatively everyone in the family system, including children, siblings, and in-laws. Senior members on the
[L5] Coping and Healing from a BPD Parent, Sibling, or Inlaw board are experienced with and can help you with setting boundaries, finding relief from FOG, encouraging self-care, improving your handling of relationships impacted by your BPD relative, and pursuing a path of recovery from traumatic experiences. The validation, information, and support will give you strength on your journey.
The Board linked to above will have links to the right-hand margin that you should click on--every single one is very educational and informational and can help you understand the way your sister's mind works and learn how to communicate with her in a way that doesn't push every one of her buttons. Here's a good start:
Radical Acceptance for family members and
Communication using validation. What it is; how to do it.
Please keep telling your story and asking your questions; we are here to listen, commiserate and offer insights and advice... .It really
can help!