If the other mom wanted you to squeeze her kid in on a Sunday, whee-doggie! That's some chutzpah. It's typically a family day to spend time together.
Are you a Common Core state? Maybe that's why the parent doesn't feel confident in helping her child do the math in 108 specific steps with arrays, line jumps, and graphs.
I think it was right to alert the teacher since it is possible they didn't know how much the child is struggling.
If anything, I'd give her a list of helpful websites that help explain the concept if you have some faves to share. Does her school do Study Island or IXL? Her teacher can assign things via those sites to help get her up to speed.
Really, your child has a pretty full plate with everything else.
