I would suggest that a big problem is the soft caecals, as they can lead to various health problems.
There are many threads on the subject usually referred to as "mucky bum"
a) Infected dermitis (sores in a very sensitive area) You need to dry your bunny very throughly after cleaning - some people use cornflour if the caecals are still moist or just damped to soften. I wouldn't try to clip your bun's fur yourself the bunny skin is so thin it's very easy to cut your bunny.
b) When it's a bit warmer there'll be flies, they are attracted to & lay their eggs on the soiled rabbit fur. When they hatch into maggots the maggots cause a serious, very rapidly progressive illness (within hours) called
Fly strike.
c) Rabbits need to eat their caecals for vitamins they can't get from their food.
d) It can be a factor which predisposes to more serious tummy problems.
You will find it much easier to clean & much less smelly if the caecals are normal
Also the strong smell of caecals taints the waste poops which shouldn't smell at all.
Your bunny cannot control the production of caecals, but should eat them directly from her anus as a reflex. She won't eat them if they don't smell right.
The first step is to give bunny a good hay only diet for several days. This should bring the caecals under control.
Which pellets are you using? & what is her diet? If you want support through it, start a thread for mucky bum. I'm sure you'll get some help.
Re. Behavioural issues- there are several potential causes.
Hormonal - both does need to be spayed as soon as you can afford it. Rabbits can smell each other's hormones. It makes them much more territorial & aggressive towards each other.
Waste poops all over the place are usually territorial issues. "Scent Off" sprays don't work with rabbits, they just want to reinforce their territory more. I'd clean with unscented soap & water. However a retired breeding rabbit may never have learned normal rabbit behaviour of doing a "poop mound" in the same place. Be patient with her, & as she adjusts to a totally different way of life, & the different smells around her, she'll learn gradually.
I never used scented products around the house when I had an intact buck who free ranged the house to prevent territorial scenting. He was perfect apart from when a neighbour kindly gave me a throw over for the sofa. she used strongly scented washing powder. Thumper peed on the throwover until I washed it in my own powder! He was fine after that.