Broken,
It's REALLY okay for you to post here. You bring a side that many here are not on....it has value. Most here have a DX of MS, Some are in 'Limbo" waiting to find out, while others are caregivers of those who have the disease.

I have not been DX'ed, but I have a history that one day may prove to be MS. MS can screw up the mind (cog issues). The anger issues your sister has may be related to her DX, while some of her other anger issues may be parental issues. Many people suffer from that....we live in a dysfunctional world....

Many here do have the visual issues and need the paragraphs to read. Some need the words bigger to read. It's all part of the disease. I suspect you can learn a lot from those who live with this, and in doing so, could maybe help repair things with your sister. Sounds like you want to understand her and have a relationship with her. This is a great first step in discovery and finding ways to cope. Please don't be upset

Welcome to the board....