Sorry this happened to your child, I used to run a day nursery so I’d like to suggest a few things.
Firstly, the eyfs says the child needs to be within sight or sound of an adult, so you can get some clarity as where she was and who was in the vicinity of her. Where were the staff placed and what were they doing.
But I’d be asking: what were the ratios at the time of the incident? Were people out the room? Changing nappies? Lunch? What were they doing?
Unfortunately, biting happens all the time, and once a child had bitten once they tend to do it again. They are also very very quick, and as much as you want to, a child can not be supervised 100% of the time, even with a one to one.
I used to look after a child who had to have 2 staff looking after him as he was so fast, and you can’t just grab them when they run so he had two members of staff to protect the other children.
However the nursery is unlikely to get funding for a 1-1 for a good few months, so in the meantime what’s the plan. Now they might tell you they will use existing members of staff, this you need to question. Where is this staff member coming from? Is it a staff member from the room? Are they still keyworking other children. Are they reducing the ratios for other child?
My experience is they will tell you he will have a one to one, but it’s not a true one to one, it will be an Existing staff member who will be given the job of watching the child for a couple of weeks, things will get better and they will go back to the previous job, and the same issues will arise. A nursery is very unlikely to fund a one to one out of their own accounts, and I’m not sure they should. So when people suggest extra measures, I would question what the extra methods are, but how are they being funded? Or what is being sacrificed elsewhere.
The parents of the biter, well they won’t really do anything, tbh at 2 there isn’t much they can do.
But from my experience, once a child starts biting they don’t just do it once, they do it again and again.
The other days I was bitten twice on the hand in a 3 hour session stopping a child biting another.
In all honesty I would remove my child because it will happen again and again.