I grew up in kinship care with grandparents. From sometime in my teens, my beloved grandmother, who was essentially my Mum, was able to get a fostering allowance for me. We had a brilliant time from when she got this, she loved her independence and paid for me to do lots of hobbies and school trips etc.
I developed a serious illness in my teens as well and then anxiety and depression. I really fucked up my uni course and ended up dropping out and then because I was out of full time education, the money stopped.
Grandma was really angry about the money because she then had no money of her own, she was from a generation that had to stop working outside the home when women got married. But she forgave me pretty fast. I was earning a very small amount part time but she was still paying for lots of things for me and letting me live there.
I feel awful about this as an adult. She's dead now many years and I am only fully realising how guilty and ashamed I am?
She had a very old fashioned financial arrangement with my grandfather, he bought their house outright and had a good pension and just gave her housekeeping.
In hindsight, it was mean at best and by today's standards probably a financially abusive set up.
I was just so selfish back then and couldn't cope, and now can never make it up to her 
I am so ashamed really and don't know what to do.