Sweetpeach, your point is mute. She's living here, she's pregnant, she is going to establish residency. She gave the right answer.
I know you meant moot

I said she gave the correct answer. It's the hospital that didn't ask her to be more specific about when she was establishing residency and what her legal status was.
"The Regulations place a responsibility on individual hospitals to determine whether, in accordance with the Regulations, a patient is liable to be charged for treatment or not. In order to establish entitlement, hospitals can ask you to provide documentation that supports your claim that you intend to live permanently in the UK. It is for you to decide what to supply, however examples of evidence could include:
documentation to prove you are entitled to live in the UK such as British Passport, permission from the Home Office;
documentation that proves your intention is to reside here permanently such as sale of goods/property overseas, receipts showing shipping of goods, looking for work, application for benefits, children are attending school. "
I'm still confused about whether dannysgirl is married or not. She says she hasn't gotten a fiance visa yet, but refers to her spouse.
Nobody said she should not receive prenatal care. Just that she should pay for it. (By the way, I don't see anything wrong with not paying right away, but letting the hospital bill you and then paying after the bill is received. US doctors and hospitals do this all the time.)
"If you do not have an automatic right to take up permanent residence but have applied to the Home Office for leave to enter/remain on a settled basis, you will be chargeable for any hospital treatment up to the point your application is granted."
I think that is pretty clear.