Medicals were not required pre 2002 for non accompanying children. You can still sponsor her.
http://www.cba.org/cba/cle/pdf/Rubinoff2.pdfExcluded relationships (9) A foreign national shall not be considered a member of the family class by virtue of their relationship to a sponsor if ... (d) subject to subsection (10), the sponsor previously made an application for permanent residence and became a permanent resident and, at the time of that application, the foreign national was a non-accompanying family member of the sponsor and was not examined.
Exception (10) Subject to subsection (11), paragraph (9)(d) does not apply in respect of a foreign national referred to in that paragraph who was not examined because an officer determined that they were not required by the Act or the former Act, as applicable, to be examined.Paragraph 117(9)(d) excludes from the family class a foreign national where the foreign national was a non-accompanying family member of the sponsor (spouse, common-law partner8 or dependent child and dependent grandchild)9 and was not examined when the sponsor obtained their landing as a permanent resident.
Subsection 117(10) provides an exception to the application of paragraph 117(9)(d), as paragraph 117(9)(d) will not apply to a sponsored foreign national “who was not examined because an officer determined that they were not required by the Act or the former Act, as applicable, to be examined.”Transitional rules come into force:
http://laws.justice.gc.ca/eng/SOR-2002-227/page-1.html sections 351-355
Requirements not applicable
354. If a person makes an application before the day on which this section comes into force, their non-accompanying dependent children, referred to in section 352, and their non-accompanying common-law partner shall not, for the purposes of that application, be considered inadmissible non-accompanying family members, referred to in paragraph 42(a) of the Immigration and Refugee Protection Act, and are not subject to the requirements of paragraph 30(1)(a) or 51(b).
Family members not excluded from family class
355. If a person who made an application under the former Act before June 28, 2002 sponsors a non-accompanying dependent child, referred to in section 352, who makes an application as a member of the family class or the spouse or common-law partner in Canada class, or sponsors a non-accompanying common-law partner who makes such an application, paragraph 117(9)(d) does not apply in respect of that dependent child or common-law partner.