Then what you want is her birth certificate as it will list exact date and place of birth, names of parents (and when and where they married), etc.
Births up to 1909 are available to view as scanned images but from 1910 onwards need to be ordered.
"
Birth records less than 100 years old, marriage records less than 75 years old and death records less than 50 years old are deemed to be modern day records and for these records it is necessary to order an extract. "
"Extracts of OPR, statutory and census records
may be ordered from this site at a cost of 10GBP per extract, inclusive of postage. "
www.scotlandspeople.gov.uk/content/help/index.aspx?r=554&412Please keep this information in mind before asking for any more help.