There is no tax deduction for gifts directly to or on behalf of individuals. Just be glad in knowing you saved your daughter future interest costs and enabled her to start off debt free.
For 2007, a high deductible health plan is a health plan with an annual deductible that is not less than $1,100 for self-only coverage or $2,200 for family coverage, and with annual out-of-pocket expenses that do not exceed $5,600 or $11,200, respectively.