Sometimes they are had to tell, like the one your dog had. They can be really bad ones or mini ones. Keep track of when she does this and how often, most Vets won't give meds till they have then a lot and bad ones. My pug has a mini one every few months, the only thing she does is whine and try to bark, she can move her legs, but we can tell she sees us and hears us, they don't last long so far. But we had a Chi when I was growing up and he had them bad. Anyway the vet will want to know when and how long and how many.
Ike born Aug 15 2012