To carry over that excess to 2025, you/she needs to not withdraw all the excess on the screen when TurboTax tells you that she has excess contributions. TurboTax asks if you want to withdraw none, some, or all of the excess contributions.
She took a distribution, as I understand, so she cannot withdraw the entire excess because the cash is not in the HSA.
That's OK, withdraw what you can, and TurboTax will carry the remainder over automatically to 2025. You do not need to contact the HSA custodian for the carry over; you only need to contact the HSA custodian for the withdrawal of excess contributions (that are to be withdrawn). Other than telling TurboTax how much you will withdraw, you don't have to do anything else in TurboTax.
The carryover will be applied to line 2 on form 8889 as a "personal" contribution. I think I saw that you understood that she need to reduce he other contributions in 2025 so that her total does not exceed $4,300 (assuming that she has a Self-only policy). Then, at the end of 2025, the carryover will be "used up" and done with.
Oh, while I am thinking about it, make the withdrawal request for this year's excess before April 15th, i.e., Monday or Tuesday. When you/she asks for the withdrawal, print the request to document it because I doubt the HSA custodian will deliver the money before April 15th. Just keep the documentation that you started the withdrawal process before April15th.
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