Lifting Twenty from my Sister

My sister exploded when she found out I'd taken twenty dollars out of her purse and given it to a stranger. She said she knew the moment she'd agreed to let me stay with her that she'd regret it. She wanted me to go. Just leave her alone. Get out of her life. Quit dragging her down. But the stranger I gave the money to was a woman with three kids who slept in her car at the park. Every evening I'd walk by and see them eating sandwiches at a picnic table. They were down on their luck, that's all. They just needed a break.