Anyone who knows me outside FA knows I'm a crossover-generating machine, and this is no exception. Got into Earthspark a little while back and got hooked, and I've got one other robotic fave at the back of my mind 24/7, so it made sense to smoosh the ideas together.
The idea is that GHOST captures the Diver from the Delaware River after she goes to investigate these strange signals from near Philidelphia (signals that arose from the birth of the Terrans). With the help of the Maltos, she escapes, and is introduced to the source of these signals. She almost immediately becomes the Terrans' first Mom 2. The change from her original form to her Transformer frame comes after a battle with Mandroid leaves her old body mangled, and the kids try and see if the Emberstone is able to help. Hence, she becomes something along the lines of a Terran, albeit she's got a few more surprises in store down the line...