I didn’t think the DWP could move a claimant from DLA to PIP if they are over pension age, PIP is only for people of working age.
Getting PIP after you’ve reached State Pension age
This advice applies to England
If you’re already getting PIP, it will continue when you reach State Pension age. You can check your State Pension age on GOV.UK.
Most people can’t make a new claim for PIP after they reach State Pension age. You might be able to make a new claim if:
you had a PIP award that stopped in the last year
you’re getting Disability Living Allowance (DLA) – or it stopped in the last year
You can’t claim PIP if you were born before 9 April 1948.
She was born in 1951