13 year old babysitting rate?

How much would you pay a 13 year old to babysit a 4 year old a few hours? Pls let me know if I’m just at out of the loop A girl from my neighborhood whom I’ve met a few times wants to babysit, my fiance chatted with her dad about her watching my 4 year old step daughter and said we’d pay like $10/hr.

The dad said “oh I don’t think she’d go for that! Probably around $20/hr!” Am i crazy or is that insane for a 13 year old? We live in Austin Tx btw. If I’m in the wrong here and that’s a normal amount let me know! When I babsat at 14 I think I maybe got paid $5-7 an hour lol