I'm sorry this is happening, and it's great that your behaviorist can come help her with a private consult.
It's not at ALL uncommon for a dog to begin to react to a baby when she starts crawling. The prognosis is very good; with careful management and counterconditioning, most dogs can become quite reliable with toddlers. So your friend doesn't need to start panicking about having to euthanize her dog. The private consult, of course, will be a much better judge than any online opinion.
First and foremost, start with management. A baby gate is a wonderful, wonderful thing to keep the baby and the dog both safe. Your friend can hang out with her baby on one side of the gate, the dog right on the other side of the gate, and feed the dog treats for all calm, relaxed behavior close to the child. Do this, over and over, rewarding calmness close to the child, while the trainer has a chance to come evaluate the situation. Your friend should pretty much ignore the dog when the child is out of the room, and then give the dog tons of good treats and attention when the child is present (but separated by a gate from the dog) and the dog is calm. She wants the dog to associate child=calm behavior=happy mom paying me lots of attention=all good things happen when the child is nearby.
Dr Sophia Yin has a good discussion of toddlers and dogs: http://askdryin.com/blog/2009/11/05/kee ... household/