Any experience of hospital to care home discharge please.

My 95 year old mother was admitted to hospital 6 weeks ago after a fall in which she fractured her pelvis.
Almost immediately she started showing symptoms of delirium. ( She did not have a diagnoses of dementia previously)
She was treated for a UTI but at no point has the delirium improved. It is severe and very distressing for us.
She also contracted covid in hospital so we weren’t allowed to see her for 10 days.
We were totally shocked at her condition when we were allowed to see her again. She is rarely awake.
She has been refusing food for at least 2 weeks and has obviously lost a lot of weight. She is also sick quite often.
Nobody has been able to give us a reason for this sudden and drastic deterioration. (before admission to hospital none of these symptoms were present)
Last Thursday the sister told us to “ expect the worst” and advised us to cancel some plans we’d made for Easter weekend. We were also told we could visit at any time because of the circumstances.
Today the same sister asked to see us again. To tell us she is ready for discharge.
We don’t know where to turn really. She has been classed as needing residential care but seems so much more incapacitated than the residents we’ve seen on our care home visits.
We are due to have a “ best interest” meeting.
My husband and I are exhausted from the last 6 weeks and may not be thinking too clearly at present. Never knowing what we are going to find when we get into the ward.
We are not sure what information to ask for.
It seems beyond cruel to ask this tiny blind confused old lady who really just wants to be in bed asleep to be transferred to a care home. Yet I know that she is being labelled as a bed blocker.
I’m anxious that without a diagnoses for her delirium and her food refusal and her vomiting that a care home wouldn’t be able to cope with her needs and she would end up back in hospital quite quickly. But we’ve been told she doesn’t need nursing care.
I would like her to be assessed by a geriatric specialist or at least be on an elderly care ward. At present she is still under the care of the orthopaedic specialist.
We don’t want to be too demanding but need to know what is reasonable to expect.
Any words of advice would be much appreciated.
Thank you for reading.