Hello crimsondryad,
Thanks for participating in our Ask the Experts event today. As to your question, the IRS allows you to use your HSA in limited circumstances where they are not a dependent. One of those situations is if you could have claimed them as a dependent except that they made more than $4,400 (see Publication 969, page 9, starting at the bottom of the first column). So, you should be fine using your HSA for your daughter as long as she meets the qualifications as a dependent except for the earned income amount.
I hope that helps.
