They remember only the part that supports the GMC, forget the part which shows up their incompetence or lack of sense at which point the legal rep for the GMC requests a break suddenly so they can have a chat with the witness
You honestly haven't got a clue what you are talking about. The witnesses aren't allowed to talk to anyone about their evidence whilst they are sworn in and giving evidence. Breaks may be requested when witnesses have been giving evidence for more than an hour or if they are upset because it's very tiring and stressful and they tend to give their best evidence if they are well rested.
That's like saying we send people to jail to protect the public not as a punishment. She loses her license to practice.
People are sent to jail to protect the public AND also as a punishment.
With fitness to practice the the primary objective is to protect the public and the reputation of the profession. Sanctions are not intended to be punitive but obviously it may feel like a punishment to the registrant. HW may not lose her license if her failures are considered to be remediable. Her issue will be that she has no insight into her failures and this never makes for a good doctor.