I have been to a couple of tribunal hearings and its pretty easy.
They are fair and listen to both sides look at evidence etc.
Don't stress one bit, I will tell you now that she won't get that money.
The major thing they always look at is was your rent up to date and was the place trashed.
The things you mention are ridiculous. She might get money for the cleaning if she fights hard enough but that's about it.
Tell her you will see her at the tribunal. I would mop the floor with her.. Lol