Auto body repair & detailing: bent frame?, wheel alignment, dodge durango

Question
What is the cheapest way to find out if my frame is bent.  I was in an accident and the insurance company did cosmetic repairs but no frame repair.  Now, the vehicle seems misaligned based on the position of the rear view mirror compared to the range of views availabel pre-accident.  I want to find out if the frame was bent but the Dodge (Durango) dealer will charge $500 to do the work and i don't have it.  Any help much appreciated.

Answer
I apologize for the late response, I’m on a two-week vacation and still  trying to answer all the questions
Have a four wheel alignment done, if the wheels are square and the sheet metal fit then everything is where it needs to be.
The rear view mirror has nothing to do with frame alignment. If your car was repaired by a reputable shop, you should have nothing to worry about.