Have you heard about the one where a (Muslim) teaching assistant was sacked after raising an objection toshowing special needs students a video from youtube of people jumping from buildings on 9/11 - a video which was labeled as for adults only by Youtube’s filters?
I am not sure though whether it is a good idea for her to reject the settlement as UK law is often something that uses money to settle disagreements.
If the tribunal rules in her favour (saying that the school was at fault) but gives an award less than what they offered (without admitting fault or apologising), she may be in financial trouble.