I said 'just about'... but as you've seen fit to take a quote out of context...
There can potentially be no evidence of a seizure to see after the fact.
No evidence of a seizure does not mean there was no seizure.
It is entirely likely that the first responders, A&E team and police independent examiners found no evidence of a seizure, but also no evidence that it could not have been a seizure.
Getting an opinion or two from some neurological specialist to the effect that a seizure is possible, is not outwith the realms of possibility.
I completely agree that paying people off to hide evidence that something else (that she should have known about) happened is highly unlikely, but that isn't what I said.
I also said that if there were some other cause, there'd be evidence of that, so this case is not simply about 'did she have a seizure or not' but also 'was there any other cause...'.
And for all we know, she's gone on to have several more seizures, which may even have been documented by scan during the seizure itself, we will probably never know!