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I located a Church of Ireland record in Naas. See below. The mother's maiden name is not listed. There is also a civil birth index record. Also see below. Possibly this record is for your ancestor. You would have to write to the General Register Office to get a copy of the record for around 4 euros. If you want instructions let me know.
I did not see the family in the 1901 census in Co. Kildare.
Name:Mary Scott ScottDate of Birth:19-Feb-1888
Date of Baptism:21-Mar-1888Address:NaasParish/District:NAASGender:FemaleCountyCo. Kildare
Denomination:Church Of Ireland
Father:Samuel Henry ScottMother:Maria UnknownOccupation:Watch Maker
First name(s)MaryLast nameScottRegistration year1888Registered quarter/yearApr - Jun 1888Registration districtNaasVolume2Page815Mother's last name (original)-CountyKildare, Wicklow