Your mother can claim the medical expenses she paid for you.
Use line 33199 to claim eligible medical expenses that you or your spouse or common-law partner paid for any of the following persons who depended on you for support:
your or your spouse's or common-law partner's children who were 18 years of age or older at the end of the tax year, or grandchildren
your or your spouse's or common-law partner's parents, grandparents, brothers, sisters, aunts, uncles, nieces, or nephews who were residents of Canada at any time in the year.