I only read your posts on the thread you linked, so I may be repeating others, but request a meeting with the SENCO. Support in school is based on needs, not diagnosis and assuming the school is a state school, they have a duty under section 66 of the Children and Families Act 2014 to make their best endeavours to meet DD’s SEN. If the school refuses to support DD, follow the complaints process.
The school can support emotional literacy and emotional regulation and with things like social interaction and friendship difficulties.
The speaking loudly can be related to sensory difficulties. Not all ICBs commissions sensory OT on the NHS, but if your area does, request a referral.
The food issue could also be a sensory issue. Has DD been referred about her weight at all?
Don’t worry about rewatching childhood programmes. It is very common. It can provide comfort and stability,
Pacing is also very common and can aid regulation.