have there been any recent changes in your household which coudl have
stressed her out? a new animal (cat, dog, anything) been introduced?
new baby? new person move into the house? what abuot your neighbours
have they got themselves a new pet?

what you are describing are behavioural problems caused by stress
inthe animal, and since your cat cannot simply say "hey mum, I'm
stressed" this is how they show it and try (badly ) to cope with it.
The stresses may be caused by changes in domestic circumstances, in
the cats home environment, maybe your cat feels under threat from an
intruder or newcomer to your household and feels that their territory
may be being taken over, hence the peeing in inappropriate places to
mark their territory.

check out what may have changed in your domestic set up, that may be
the answer as to why she is doing all this. please do nto be angry
with your puss, she is obviously upset by something and she needs her
mum to comfort her, she is not doing this deliberately to piss you
off, please understand this.

if ti si some sort of household upset which has caused this you coudl
try using a feliway diffuser, plug in thing which releases synthetic
hormones which the cat finds calming and may go some way to maeliorate
the problem

I hope you find a solution, your cat is obviously very unhappy and
needs your help
bookie

I agree with what bookie said, but I'd also suggest going to another
vet and getting a second opinion. Have you had bloodwork done--it's
possible she could have something like hyperthryoidism, easily treated
with medication. Poor girl. She's obviously unhappy and is trying to
get your attention the only ways she knows how.