How should I handle when my sister owes me 1000$ and I loaned it 5 days ago what would you do? What should I do should I have loaned it?

Don't loan money to family members. Nothing good ever happens.

first off it is never a good idea to loan money to family or friends, but if you do you should sit down together and discuss the terms of the payback,, When, how much for each payment, is there any interest, what happens if payments are not made, etc, kind of late now

It's only been 5 days. Give her some time, man!

You should have discussed with her the terms of paying you back. I would only loan money to someone if I knew they could pay me back and they let me know when.

Have you ever loaned money to her before? Did she pay you back then? Go ahead and write out a ledger showing how much she borrowed, with a section showing how much had has paid back, and the remaining balance. Make a copy for her and tell her that it will help to keep track of her payments. Then offer her the choice of monthly payments. I know she is family, but there is nothing wrong with being organized. If he gets upset about this, then do not lend her any more.My mom did this when I borrowed money from her, and it worked out fine.

You loaned it, so too late now. Ask her to give you as much as possible every week and hold her to it. She must learn responsibility.