It's unclear what the best way to to handle this from the beginning would have been. I suspect you could either clear her entire return and start over, or delete the W-2 and then delete form 8889, and go back to the W-2 first. When you run the interview, if you said she had NO HDHP coverage, that shouldn't trigger the dependent error.
Because this is managed on several internal program worksheets, I think what is happening is you are correcting one error and then another error comes up because it is in a different location.
Also, note that the HSA bank must return any earnings attributed to the contributions (like interest). This is taxable income on her 2024 return because it was from 2024 contributions, even though the interest is not actually paid until 2025. She can report it as bank interest and check the box for "I did not get a 1099-INT for this interest."
