Wowee! Lots of responses!
The situation is this:
She doesn't have another job and doesn't babysit for anyone else. She isn't allowed to go out with friends on Friday nights because her mum works night shift and can't drop her off and pick her up.
She lives three blocks away, so her 25 year old sister is there if she needs her too.
She always comes and hangs out with us anyway.
So I offered $10 p/h and $20 p/h for every hour past midnight, plus I'm buying her maccas for dinner (which her mum has agreed to).
So from eight till 12.30 ish we will be out. So $50 and dinner for the night.