Thank you for the additional information.
The symptoms you are describing especially the wobbly head and drooling make me very concerned that she either got into something toxic or if there where alcohol and or drugs available that is possible as well.
Without knowing what she may have been exposed to it is difficult to advise you on exactly what may be going on.
The best thing to do would be to get her in to the local ER so they can do a hands on exam with some blood work to look for any types of toxins and provide necessary treatment and supportive care.
I would hate to tell you just to monitor her at home and then see her get worse.
If she had ear mites this can effect the inner ear causing vestibular syndrome . Click here
If you can not get her seen tonight you can try Pepcid AC at a dose of 0.25=0,5 mgs per pound of body weight every 12 hours to help with nausea( which could be indicated by the drooling) and have her seen first thing in the morning.
I wish I could tell you what was going on for sure but unfortunately that is not possible.
Please let me know how she is doing I am worried about her. Please reply back if you have additional questions or concerns and I will be happy to continue.