I was in a similar position when the LA was consulting schools for secondary transfer. I made a general subject access request for my chid's file - I will paste my letter below. I think I copied it from another website, I probably would have used slightly different wording but it covers the legal bases you need.
I got copies of my DS's Ed Psych results, panel meeting minutes (very sparse), letters/emails to and from schools about whether they could meet needs. Mine was a slightly different situation though, as all of the schools were special schools and were either in other LAs or independent special schools. So it may be true that internal correspondence does not have to be released.
Still, it's worth doing a SAR anyway, as it should uncover any information that is available. You might have to wait up to 40 days to get a result and they can charge for photocopying, though my LA didn't.
I think your DD may be older than my DS, so 'Gillick competent'. You might have to enclose a letter signed by her to confirm her permission to access her data.
You might also try writing to the schools directly, they may be willing to copy you into their reply. I found that some of the schools I approached were helpful and willing to do this, as they could see that the LA was trying to push DS into an inappropriate placement.
Subject Access Request letter:
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Dear Sir or Madam
DPA request for XXXX YYY, DOB 00/00/0000
I am writing to make a formal written Subject Access Request for my son, XXXX YYY, under the under the Data Protection Act 1998. I am requesting a copy of all records pertaining to XXXX YYY, held on both paper and electronic format.
This should include minutes of panel meetings, notes, e-mails, records of conversations, telephone notes and office notes plus all formal reports, assessments and letters sent or received. I confirm that I am acting on behalf of my son in this matter, who is 00 years old and therefore unable to make the request himself, and that the request made on my son?s behalf is in his best interest.
XXXX was assessed for a Statement of Special Educational Needs by ZZZZZZZZZ County Council in 0000 following a parental request on 00/00/0000. He has a proposed statement and his secondary school placement is currently being considered by the authority. His SEN Case Manager is AAA BBB.
I understand I am entitled to these within 40 days and that you may charge for the costs of photocopying. If you need further information from me, or a fee, please let me know in writing as soon as possible.
May I take this opportunity to thank you in advance.
I look forward to hearing from you.
Yours faithfully,
SCM