Just realised perhaps I should have said a bit more in my post, sorry
Findlay is 14 months old and has a variety of different types of generalised seizures including absence seizures, myoclonic seizures and tonic-clonic seizures. They think it is quite likely that his sudden going floppy moments he has are also a type of seizure (atonic).
He has no pattern to his seizures at all and can have them any time of the day or night and we have been unable to figure out what triggers them. His brain showed epilepsy activity during his EEG despite the fact he didn't have a seizure during the test. His neurologist said something to us about the activity at the front of his brain although I wasn't really taking everything in.
What type(s) of seizures does your LO have? How old is she? Is she on any meds?