I just saw this post because I was not on last night. I need more info to help you, but I am a trained emergency animal rescue tech. Think about what could have been out of the norm. Was there a storm? Thunder, lightning? A loud noise?
If she was twitching and such, watch her... if it happens again, you may need to get her in to have some tests done for seizure issues... could just be a blood sugar response. Could be more. Most regular vets are willing to work with you just be up front with them.
Let me know how it goes.
As a person with 3 dogs and a cat, I understand... they are furkids!