Since your daughter was listed as an "other dependent" on your tax return, she does not qualify for the economic impact payment. Dependents (of any age) do not qualify for a payment, and only children age 16 and younger increase the payment that is paid to parents.
She will not get the payment this year.
However, if she is no longer your tax dependent in 2020 when you both file, she would receive a credit that is refundable to her on her tax return when she files her 2020 tax return in 2021.
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