I’ve just read your last post OP.
If your DD is to be in mainstream school and you yourself are to cope with having her there and getting her through, you are going to have to accept that everything will not go exactly as planned.
Teachers are humans. There will be instances where the latest info hasn’t been read by everyone or where a change of plan or timetable means a teacher encounters a child they weren’t aware was coming…or has forgotten was coming. These things happen and can’t be totally avoided. People will sometimes speak with a tone which isn’t so friendly. It happens. You will never have everyone, every day (including ourselves) saying exactly the right thing and in the right tone.
I get that these things make a bigger difference to your DD than to most - she is easily thrown off track. I get that you wanted this to be a special day for her and it didn’t work out. That is disappointing…but you move forward and some of that involves accepting things won’t be perfect and not seeking to apportion blame with everything, but accepting these things happen.
What happens next? Do you want to accept this as one of those things and move on from it? Do you want to contact school and talk about what happened (without apportioning blame) and things that can be done to try to help avoid it in future? Do you want to complain about this teacher? I’m not quite clear if you’re venting on here and will then move on, or if you want next steps??
Regular contact with school and regular discussion about things that work well and less well and working together to make adjustments to help your DD, rather than looking to blame is probably the best way to make progress. And you have to know that progress can happen but won’t be linear or necessarily fast and there will be bad days. You know that. And sadly, you also have to know that the funding and demands and resourcing of schools mean your DD is unlikely to get the level of support from every teacher that she might need….the communication and time that each individual teacher can put into making things work for her, whilst doing everything else they have to do, will never be as much as it needs to be. Comi png to terms with that and working out what can it be compromised in and what is unacceptable, vs what is a bit disappointing and not ideal, but to be accepted as a consequence if an over-stretched system, is something you will have to decide.
Hope tomorrow is a better day.