Thanks Ricky
If not present on the 1891 census then she must have moved on.
She certainly wasn't married nor burial at her birth place of Dean Beds.
According to the parish baptized records at Dean Beds she was entered as Susanna Pentelow in 1844
which her age is slightly out of sink with the census of 1881 but as you well know you can't just rely on one thing with them.
Incidentaly Susan Plutton doesn't appear anywhere on the Dean register,
Thanks again Ricky.