I would also recommend your friend find a different trainer.
The dog was adopted over the weekend so, that is... 3-4 days ago? I find it highly irresponsible for a trainer to draw the conclusions he/she did given that fact. It is very common for newly rescued dogs to lack manners at first.
I would suggest your friend institute NILIF (Nothing in Life is Free) in the house, establish a consistent routine with the dog, and focus on positive engagement with the dog. Don't rush through the acclimation process, take it slowly.
Last edited by LifeofRiley; 01-15-2014 at 10:53 PM.