Welcome and so sorry about your DD's near miss....
Presumably you were almost there on the 11+ as well
Do you have a specific GS in mind that you would like your DD to attend if she gets lucky? Are you out of catchment?
A really helpful person, I am sure, will come along soon, but I think you will need some very compelling academic evidence from DD's current school to help you along the way for a 12+ appeal success. Not sure that KS2 from primary school are of much interest now.
I am sorry that current school are not more forthcoming, but presumably you have half year reports and will have school tests leading up to Easter that show great progress?
Guest55, I am sure will be able to tell you what test results to date from current school would be useful.
Good luck, if its what your DD really wants, go for it