I'm Anne. I've been preparing taxes for 27 years, and I have a different answer for you.
According to IRS pub 501 (https://www.irs.gov/pub/irs-pdf/p501.pdf) page 12, it states that your child may no longer be your dependent since she is now married and will be filing with her husband.
The scenario that the above expert mentioned is only valid if your daughter and her husband were below the filing requirement, and are only filing to receive any Federal tax withheld. Although this can happen, it is normally rare, since most married couples do work and do need to file a tax return.
Filing requirements are found on page 7 of the instructions for Form 1040 (https://www.irs.gov/pub/irs-pdf/i1040gi.pdf)
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