Shouldn't she be the one doing the charging? If she's watchin your kids, shouldn't she set the rate that she's willing to do it for?

5pm-2am are mostly hours your kids would be sleeping right and so would the sitter? It could be difficult for her considering your kids are younger. I would talk to her and try to work something out if it’s a family member.

I watched 1 kid for 60 a week. That's me supplying the food and drinks. That was breakfast and lunch and snacks.

@ekko is right. Definitely charge her close to daycare prices to make it worth her and your while. That's basically a full time job with those hours. Plus you have your own kids to take care of. I would do no less than $800/ month which is about $200 a week. In my area infant daycare costs $1000-1500/month

Since it’s full time care for two children under 2, then probably something close to daycare prices.