I hope you are not suggesting I did any of those things @ByRedTiger
Some of your posts are a bit rude too, like: You must have done very well on your English gcse to comprehend the point of my question.
You gave us so little information – even now we don’t know how old your DD is or what she thinks of the boarding idea. That's fine of course, but we cannot help very well without that info. If someone is a parent at either school, they can only say how their DC have found it. Your opening qu was "which school is better" but to answer that someone needs to know more about the DC concerned.
This is a public forum and as such posters can say what they like as long as it doesn't break the Talk guidelines – which I don't think any posts here do, but if you disagree feel free to report them.
This struck me form a post by you Recently I spoke to someone who did not think she’s actually asd 1 since she is extremely social.
Not clear who the someone was – a medical professional experienced in ASC? But in fact ASC presents differently in different people and plenty of people who are ND are social, or at least mask to appear so. If she has a diagnosis then that's helpful.
Btw the term high-functioning autism is not used any more – if for no other reason, bc it suggests that those who are not high functioning are in some way low or lower, which is best avoided. It’s more than possible to be ND and be very bright, very able.
Anyway I hope you find a school to suit your daughter and I really hope she thrives there.