You have certainly been through a lot,
jtmur1. My mother has BPD and I understand many of the challenges you are facing. There are a lot of resources here that have helped me; perhaps they will be helpful for you, too.
- what are some strategies for getting my reactivity under control so I don't react to my BPD sister when I run across her again (I've been nc for 5 years) and family who push my BPD sister's agenda and are trying to get me back in the fold?
One thing that can help replace automatic reactions with centered responses is being mindful of your thoughts and emotions as they happen. Here is a good workshop that might help:
TOOLS: Triggering, Mindfulness, and the Wise MindAnother strategy is to have some response statements prepared ahead of time, as
Tayto suggested. (People who talk to the press regularly do this.) Rehearsing these while visualizing yourself feeling calm and confident can help. When a situation presents itself, you will know what to do, without worry.
- I can appear to have no emotion and be calm while I'm listening to my fast pulse race in my ears and afterwards I feel so much anger... . What do you do with your anger?
Is the fast pulse a symptom of your anger, or is it anxiety?
I agree with this:
Anger is a very natural emotion which is important for letting you know you are not in agreement with something.
Often, we will feel angry when actions (ours or those of others) are not in agreement with our values and boundaries. Other times, anger might signal that our expectations are not in agreement with reality. What specifically makes you feel angry? When I am able to identify exactly why I feel angry, I can look at my boundaries and expectations and make a plan for how to look after them better. This workshop provided some good examples for me when I was first learning about boundaries, and I still find it helpful to review from time to time:
BOUNDARIES: Upholding our values and independence I also had a

moment when I read about radical acceptance. Here is one of the features we have on that idea:
Radical Acceptance for family membersYou have asked some very good questions that most of us have had at one time or another. Thank you for taking the time to post them. I hope lots of folks will chime in. I'm glad you've joined us!
Wishing you peace,
PF