Deciphering handwriting of Will of Augustus William Faber dated 1844

Who was Sarah?

Below is an extract of a Will which might possibly be that of my ancestor Augustus William Faber who married Elizabeth Saxton (or Saxon) at Shoreditch in 1815.

There is a lady named Sarah mentioned in this Will but I am unable to identify her surname. If anyone could decipher the writing or offer any suggestions I would be very grateful.

My transcription so far

"... give, devise and bequeath unto Sarah ? commonly known as Sarah Faber my beloved companion and friend ... "