I agree, 4 months is the rebellious teen stage for rabbits, let them mature another few months and see if they settle down. Some are very territorial and will be fine housed alone. My Sassy is tolerant of humans until you try to handle her, then prepare for a fight. I can handle her no problem but wouldn't wish that girl on anyone else. However, she is an excellent mother and, my Buck, Sylver is a love bug, the two of them make nice, big, even tempered, easy to handle if not always love bug kits so, she stays.