In my book, when you help, you help free of charge, free of expectation, because you want to help. It's why I don't loan money to friends, I only give them money I'm willing not to see again. If you are charging interest, and particularly if you're getting angry when it's not repaid in a timely fashion with that interest, I wouldn't call that help. I would call it a business transaction.

The grocery store doesn't "help" me with food. I pay for it.