I'm sorry his words are continuing to hurt you, silver. If you keep standing firm, eventually he'll get the message that he's wasting his time asking. If you give in, he'll learn that sometimes you say yes, sometimes you say no, and so he'll keep hammering away at you.
As for your mom........I know you felt you had to give her the money, but frankly you've stepped into the relationship between your sister & mom. Mom made lousy decisions and so doesn't have the money. Yet there are no repercussions because she can turn to you to make it all better. You basically single-handedly kept her from letting your sister down....what would've happened if you hadn't?
Maybe learn from this and make a plan for next time? A script?
This is all we can hope for -- that we learn from today in order to make tomorrow easier. Let yourself off the hook and look to the future.
You are still learning. Maybe you need a shirt to remind yourself?
