The things that jumped out to me (medic but not obs&gyn) 1) any theatre I've ever been in has got eirely quite & calm when there's an emergency. In fact the bigger the emergency the calmer we go. 2) it's very very unusual for her to be awake for 3 1/2 hours whilst they operated, it would be very usual & safer to convert to a GA. This could be done within minutes 3) I imagine the scan had been hot read (IE quick look for anything life and death) but was waiting for a full in detail report by a specialist. 4) It is possible to lose more that your blood volume, basically we're pumping it in and that's coming out too. 5) I'm surprised if it was a rupture with associated ++ hemorrhage to the extent she says they didn't opt for a hysterectomy.
But saying all that, I had a tricky birth EMCS, PPH etc etc and what I remember & what is true are two different things. It's very strange, I had a debrief with my consultant and if my husband hadn't been there nodding along to her recount I would of sworn they had someone else's notes by mistake because those things hadn't happened to me and my time scale for events occuring was well off. So strange not being able to trust your own memory and I should of been able to make sense of it more than most.
Due to patient confidentiality no staff will be able to comment to confirm or deny anything she's said. I imagine there's a fair few eye rolls going on between them though.