At the end of the day one has to be pragmatic and realize that Rome wasn't built in a day.
We got a grade skip which got our DD out of a particularly toxic situation with girl age peers but it wasn't enough for her academic development. We have pragmatically chosen to go along with the school because social development will be important, nay critical, to both current and future mental health.
But we have decided to enrich after school via AoPS for Maths and an online composition class for expository LA.
Not ideal but a compromise that moves us, albeit at a slower pace, in the general direction we need to go.
Above all don't beat yourself up over it - you need to look after yourself too so that you can better look after your dependants. When I was younger and fitter I was a lifeguard and the first lesson we learned of first aid was "don't make a causality of yourself becuase then you can help nobody". I tried to remember that lesson well and it has helped me over the years.
Chin up!
YMMV
