i have seen similarities with what you are saying in a jill ive got here, that was sold to me as sme half blood EU bollocks, but tbh, i saw her, liked her and bought her. she seems to have a lot more "concentration" for want of a better word, she will look around and stare very calmly and intently at everything around her from her elevated view when handled, when the other "ferrets" are wriggling and messing about. when i bring food to the hutch at feeding time, everyone else is bouncing around with excitement, but most of the time she is just calmly looking intently at the carcass of whatever