Hi Wendy,
Yes, this I can sympathise with. This kind of situation needs to be referred to an underwriter.
When you describe this, you make it sound like this was some time ago. This is good. When you speak to insurers/brokers about getting a quote, you can ask them to refer this to the underwriter and explain the situation fully. I guarantee one will accept her circumstances and not load on the premium for it.
I have done this many times. Get quoting, get calling and ask them to refer to the U/W on her behalf and get them to contact you!!
Your daughter is NOT uninsurable!