OOP: Power hungry DADA teacher?

[Meg]

No: HPFGUIDX 65860

So... if Unbridge isn't on Voldemort's side (Which is entirely 
possible...) then what on earth was she doing sending dementors to 
Privet Drive? And why didn't anyone in the ministry know they were 
there, as they were greatly surprised at Harry's explination during 
the trial that they just happened to show up on his block? 

Getting back to the original question.... Honestly, I feel that she 
is almost definitely on Voldy's side but is there some small sliver 
of chance that she's just power hungry like Percy?