We’ll move on from this incident, never speaking of it again, as commanded. But it ended with my sister thinking a twisted version of what happened blaming me as the culprit, and that isn’t the truth.

I did get to tell her my version and POV and she chooses not to believe it. After all, it’s me vs. her own daughter.
Sadly, these relationships are pretty much done regardless of occasional polite conversation on safe topics. It takes so little to destroy relationships. With that being said, they had to have already had the seeds of destruction planted as this event was absolute BS and not enough to cause any kind of rift.
In defense of our mother, she didn’t pit us against each other and play favorites. She disapproved of my sister’s choices at every turn. My sister won’t visit with Mom because within a couple hours she’s crying and Mom’s out the door running away, insulting my sister’s life. While I made choices that align with my Mom’s ideals, so she “approves” of my life. But Mom still tortures me at every turn over control and there is no true pleasing her, or if so, it’s only temporary.
Mom was grateful for my getting her out of the house yesterday and it was a nice afternoon. But, unless I am doing nice things for her, that sweet attitude will cease.