Can anyone explain these symptoms?!

Can anyone explain these symptoms?

My 64yr old mother is experiencing an array of symptoms which are as follows:
she has a constant vaginal itch which has been checked out by the doctor and it is not coming from thrush or any kind of related infection, this itch gets worse after each bowel movement which are very frequent & loose. she also has the need to urinate otfen but has no pain with either bodily function and is red raw around the back& front passage the doctor says she has a prolapsed womb but no surgery is required at present, can this be a cause of such symptoms or is there something else that could be at work here? Please understand this is a sensitive issue so i'd appreciate, serious answers only. Thank you in advance!

Dry skin ,
Skin dries due to lack of hormonal activity then we itch scratch and become sore
This becomes a constant cycle also she needs to cleans from front to back to stop the vagina from becoming contaminated by coliform bacterias .
Try using moist wipes the same ones used for babies are best.
I like Dove bath care products that moisturise .
If Vaginal soreness is a problem go to local pharmacist and ask for a product to stop feminine itching.
The loose bowel could be a symptom of a constipated stool higher up the colon causing leaking around the blockage.
What is diet like high fibre foods might assist.
Have medical investigations been done.
Diabetes can cause severe soreness and itching.
Does your Mum drink plenty of fluids dehydration causes urine to become concentrated with Toxins that will cause irritation and itching.
Is your Mum able to bath or it could be as she is worried that problem is hygiene
She may be bathing too much or using strongly scented soaps that could be a root cause.
I hope your Mum feels better soon there is nothing more distressing than prolonged itchy skin.
Good luck I hope you will resolve this issue soon