Yes, if she doesn't provide more than half of her own support.
*Note. Your child is considered to have lived with you during periods of time when one of you, or both, are temporarily absent due to special circumstances such as:
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Illness,
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Education,
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Business,
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Vacation,
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Military service, or
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Detention in a juvenile facility.
Who can I claim as my dependent?
Follow this link for additional information https://taxmap.irs.gov/taxmap/pubs/p501-004.htm
