She looks gorgeous and definately needs a vet check and could be suffering from dementia as my late cat Kocka did.
She didnt moan but she shouted most of the time but also had other problems.
She also maybe going deaf but you need to get her checked out to see if there is a problem that can be treated.
One thing and its so important if she is suffering from dementia, she needs comfort and reassurance and you do not want to be in a situation where you didnt give her enough before she leaves you, and then regret it so much.
Dementia makes them so noisy, especially if they are going deaf too and cats suffer from so much of what humans do when they are old and they just need someone to love and care for them although its so hard when you have a shouting cat.