@FlyingSquid if she's no better tomorrow I'd insist on a GP appointment tbh - as @chopc said, if it is bacterial, antibiotics will soon have her feeling so much better. Sending healing thoughts!
That link from Pembroke- the candidate named on TSR who had posted on her twitter about her offer I didn't think had A-level grades in hand - but I could be wrong. That notwithstanding students on TSR were understandably linking to this -www.undergraduate.study.cam.ac.uk/applying/interviews
I quote - Not all candidates who are interviewed will be successful/made an offer of a place, but all those who are made an offer will have been interviewed.
FWIW I think all colleges should stick with the standard process and timeline for offers - to drop the interview like this suggests the process is not as holistic as all the web info would maintain. But I suppose if the candidates' GCSEs, PS and relevant admissions assessment were so strong that no matter what they did in the Interview they were getting an offer, then I guess the college saved themselves some time.