Oh I have a question for you. 
What is Pony's past? I know she was the last to arrive to the Colony(having arrived 4 years ago) but what was she doing before then. As you said, she's one of these people who wouldn't last long int he world. SO, someone had to be protecting her in those other five years between the start of the robot take over to her coming to the Colony, right? (wink wink). I guess what I'm saying is, what if the reason Pony is adamant about finding some who loves her and keeping Lucien is because someone she loved as already taken taken from her once? Would explain her tendency to loneliness and mental instability. Saying this because I'm trying to think of ideas for this characters haha.