rosie's odd behaviour

since rosie has turned 6yrs old she seems to have gone naughty she always been a jealous bun and she has to have cuddles first etc, last year i bought them the carrot tree she started too chase mowgli as soon as i put it in room, so i left it at my nans for months when i brought it back home she never fought him anymore. Everything had calmed down again, but for her birthday on 6th june i bought her a pink basket den from PAH and as soon as that was introduced the chase fughting began again, mowgli grumbling stamping and running away from her when she went near him, so i gace him vetbed but it didnt help, now at the moment mowgli sits in the crate scared of clming out as she chases him as soon as he comes out i despair i want my bunnies back to normal please rosie is being very naughty to him they are fine in the garden they chase but then settle down

maybe if i spray the new objects with the disinfectant spray that i use on them thats coconut flavour would this help?

they sound like mad elephants when they chase and rosie gets smelly
my nan said take rosie to vets, but they cant do anything she's a very healthy girl, its in her head the problem not physical

is she neutered?

maybe she's having a mid-life crisis?

yes she is spayed i think she is lol

bless her. i have zero practical advice i'm afraid...