Do I think she's a bad companion mechanically? No. She's awesome, I don't even have to work at staying alive with her around.
Do I think she looks bad? No, I think she's pretty darn cute.
Do I think the price was wrong? No, not really.
So then, why do i regret buying her?
Because, all I hear with her around is http://www.youtube.com/watch?v=rnrnGX01VzI