In short, nope, can't see her in 1881 but hopefully someone else will find her.
I have tried the following, and if you haven't already you may wish to try some of these approaches as you will have more knowledge of family names etc:
- Jane + dob + Hexham birthplace search, England & Scotland
- Stewart + keyword Hexham search
- Jane Wall* + dob + keyword Hexham search
and a couple of other variants I can't recall now but which were also unsuccessful.
I also cannot see what became of Rachel Stewart & her daughter Jane (see post from c-side) - I can't see an obvious marriage or death(s). It would be good to track these two down, to see if they could be yours, or at least to eliminate them. Have you ordered the 1877 birth certificate?
There is an entry in the 1871 census that niggles me:
Hexham RG10/5146 folio 15
35 Giles Gate
Grace Moore, Head, Lodging House Keeper etc
...
William Walker? Wallice? [not clear], Lodger, Unmarried, 34, Hawker, Scotland Hawick
Rosannah Stewart Lodger Unm 33 [occupation dittoed from above] Scotland Dumbarton
If either or both of your Jane Ann's parents belonged to a family on the move then it may be a challenge to find them.
It may (or may not!) help to build up a picture of any Stewarts with an association with Hexham, remembering nearby RC & other churches, including in Newcastle.
Looking at the 1891 census entry for the Convent of the Good Shepherd, the ages of the young women do not suggest that it was an orphanage, despite my earlier comment. Most of the women are easily old enough to be sent out to support themselves. It does look like a Magdalene laundry set up (apologies to locals who may be sighing saying "of course it was"), suggesting that Jane may have been left to fend for herself at some point - and that she had a hard life which hopefully became easier once she met William Brown.