Stress can bring on seizures...there is a website I use for information when dealing with the dog I had..
www.canine-epilepsy-guardian-angels.com
After you read the info you will know things to watch for... if she starts having anything like this I would have her checked out ASAP.
If it is stress from being crated and causing sugar problems..
I would get an XPen with a peice of Linoleum or Vinyl under it.
or a room without carpet and use a baby gate.
Put the crate in the area with door off for the pup to sleep in, food, water, toys and pee pads at the other end.
I always made sure my pups take a naps, after hard play or up to long.
The little squirts don't want to but they need it.
And get some nutri-cal..If she is not eating right, get sick or has a spell.
(this will bring the sugar levels back up.)
What dog food are you feeding her?
Some dogs can have an allergic reactions sometimes to certain foods.
Seek VETS advise..if at anytime you are not certain what is going on..
Keep us posted...Sherry