Daughter attacked need advice

[Christinatherabbit]

I need some impartial advice as I don't feel like me and my daughter are being very supported by family here.
Dd is 16 and just started GCSES. On Friday she was attacked by another student (female) and left with considerable injuries. Not enough for hospital treatment but bad. She is understandably shaken and very upset. There was no back ground or history between them. I don't want to go into too much detail as too risk outing my daughter but it was pretty much unprovoked. The girl demanded my daughter do something and my daughter refused and that was that! She attacked her. It was in a busy corridor all caught on schools cctv with multiple witnesses that all back up the same story.
The girl has been suspended in the short term and I will be going for a meeting on Monday. Would I be unreasonable to say I want her expelled? There is multiple posts of this girl now on social media bragging and laughing about what she did to my daughter and older family members of her have been requesting my daughter as a friend on social media. She has never met any of them and had never so much as spoken a word to this girl until this event. She needs to go back obviously and finish GCSES as is supposed to be staying on for 6th form. This girl is not taking hers yet. My dad has sent me multiple links of what would happen if this girl gets expelled and says I need to think carefully before I ruin her future (I really couldn't care less about her future at this point more concerned with my own daughter!) My brother has helpfully told me she needs to stand up for herself and should be taught to fight back (mind blown by that!!!) My DH keeps saying it makes no sense as if somehow my daughter must have done something although every bit of evidence including cctv witnesses and my own daughters word suggests she really didn't! I just don't know what to ask for here and how to deal with it? She made threats to kill her during the attack if that's relevant.
So as not to drip feed the school couldn't give me much background although I did ask them if there was anything like a disorder or something...anything...that could explain this behaviour and he said no. I feel so helpless and stressed
Anyone been through similar or any thoughts of how I deal with this and what I should be asking or expecting from the school

Your poor DD 😢 I would definitely not be accepting that outcome from the police. So if an assault happens in an institution, normal criminal law doesn't apply?! I don't bloody think so. They need to investigate and press charges. That's a pretty serious assault, and needs to be dealt with as such. Also yes to keeping records of all the contact made by her family etc, and reporting that as well.
Don't feel any empathy towards the girl, and any repercussions that come her way, she will most likely have form for this kind of thing. Nasty little bully.

@Christinatherabbit You don't have to say but it's not a school in Berkshire is it? Just the timeline and description match something I've heard this week. If it is I moved my Daughter from this school for the same. School massively unhelpful.

I would also go back to the police and demand they investigate the criminal assault on your daughter. It doesn't matter where it took place.

As someone upthread said, don't be scared about contacting your MP to prod both the school and police.

This is wrong, tell them you want to report a criminal assault and get cctv, remind them they must record it as a crime under home office counting rules etc