Toy poodle wakes up shaking

Question
Hi there

I have a healthy 10 year old toy poodle. She just had a senior blood panel completed two weeks ago that came back normal with the exception of a bit of an elevated liver count or something- the vet said we would start her on some milk thistle once her teeth are cleaned next week.

The last 4 out of 5 days, she has woken up vibrating or shaking. The rest of her is totally normal. She wags her tail, eats, drinks, goes outside to go to the bathroom. It's the strangest thing. She did it two days in a row so I gave her to may parents for a night (she sleeps with me) When she slept on their bed...it didn't happen and she slept through the night. The next two nights, she's back with me and the shaking starts again. It's the oddest thing. My parents think she's maybe hearing something I can't hear and getting scared. I did call my vet but decided it was not worth going in because she had no other strange things about her. Also, the moment I put her in my car she starts to shake so it would be hard to know where that shaking was coming from. She is a 7.5lb whitish colored poodle.

Any ideas? I've been looking up seizures, strokes and other things but she doesn't present any of those characteristics. Just shaking and then eventually that stops and she's totally fine all day until the next morning. I've checked all over her body for bugs, bites or anything else. She's always been a big licker- her paws,or other people and that hasn't changed. Could her teeth be bugging her? I would never neglect taking her to the vet and have an appointment next Tuesday for her teeth but I'm not sure if I should go earlier.

Thanks for listening. Any suggestions would be greatly appreciated.

Answer
Hello Amy,
I can not think of why she should be shaking. It could be something that she is sensing that you don't, but it also could be something nurological or even emotional.  Maybe something happened in the room that frightened her, caused her pain or scared her and now she is focusing on that.  

Try doing fun things in your room to help her get over her fear.  Play with her toys in there, and even feed her for awhile if your parents will allow it.  She needs to see that your room is a plesant place.  

Let your Vet know what is going on when you take her for her teeth.  
Let me know what they said, and I will continue searching for a cause.

Thanks for your patience and for using AllExperts.com
Kim