See 1901 entry here: http://www.census.nationalarchives.ie/pages/1901/Tyrone/Mountjoy/Ba...
See 1911 entry here: http://www.census.nationalarchives.ie/pages/1911/Tyrone/Cookstown_U...
Could these be her?
I think this is her. Born Sarah Mary Parker. Private see also the documents I uploaded under sources - marriage and birth certs.