Why don't we do this:
Dr. Douglas sees that 32 means business, and isn't going to let the other two leave unless Kevin practically handcuffs himself. She senses his heart, but can't really tell what it is because it's a strange piece of tech. She attacks it, hoping to do some kind of damage.
32's reaction startles her, and seeing that her interference with the heart is killing him, she stops out of fear.
This give Kevin just enough time to run up and hold 32 back while Tony and Rose escape, or do whatever.