Dear Bones,
It is very frustrating. I wish I'd had a resource like this board when I was struggling to deal with my aunt... but she's gone now.
I felt very sorry for her always... she was so miserable, and for nearly all of her last 25 years of life, she was ill with one thing or another.
She gave many gifts to her nieces and nephew... and to my children. She had a knack for finding the most special, precious items... always, only the best. Pretty little trinkets and decorative stuff... things that we could never have purchased on our own.
Thought of something else with her regarding boundaries to share with you. I didn't realize what it was about at the time, but years ago, when my oldest girls were very small, she stopped by our house with my Grandma to visit. The kids were chatting with their Great-Grandma when suddenly - Aunt stood in the middle of the room & pulled off her wig to show them her baldness (she'd been undergoing chemo for one of her many cancers). She kept trying to bend down to give my little girls a better view, while they just stood there, mouths hanging open...

I think she even shocked my Grandma, because it took a bit before finally she said to Aunt, "Time to put your hairpiece back on" very firmly. And I saw the expression whisk across aunt's face... rage. Then the blank look.
With what I now know, I'd say that she was furious with her own mother for not giving her medical concerns enough attention. But I also know that it never would have been enough attention for her... she was bottomless well. Very sad.
Love,
Hope