I am no expert..but if it was me, I would stick the eggs under her (if she is really broody) when you would normally put them in lockdown! Let her sit them the last 2 days while they hatch and then be a mom...I am not sure I would trust her mid way through to do all the turning.
Good luck!
BTW...I had a day when my 4 yr old turned my bator up to 110 during the summer...I thought for sure she had killed all of the eggs but I still had a 95% hatch rate, eggs are resilient! Just do your best, and hopefully they will be ok!