Try changing the divider and give the male the small size for a month. Then put together a cave just for the female and a slab of concrete or rock at an angle to spawn on. Maybe two caves just in case the male gets into the first one. After a 2-4 weeks the female should be comfortable and confident enough to defend her territory and know where her safe spots are to go when the male is too rough. Once that's established your free to start pulling the divider only while supervising them of course LOL.
I disagree with using dithers for umbees... They'll make short work of them. I've tried on many occasions. Another option is making a trapped door in the divider like I had for the general and I can explain that later if I need too. Good luck.
this is exactly what i was looking for. thank you fwp. what do you think about the partial divider thing with allowing her through but not him?
