When you period is over for good usually, unless you have your ovaries taken out.
It is not normal. see a doctor immediately
She probably has had a false pregnancy. Rebreed her immediately.
The cycle begins again.
They atrophy
When something happens over a long period of time
Because
It just stays dead.
antizamboniism this is the scientific answer
illega exposure
Everybody dies. That's it.
If you have had a hip transplant and the period of warranty is over, you can still see the doctor who performed the surgery if you are having issues or experiencing pain.