There are some rules to claiming parents as Qualifying Relatives, but here is a checklist, and there is also the option to input all the information on TurboTax, and the program can tell you if it is alright to claim her.
Many people provide support to their aging parents. Here is a
checklist for determining whether your mom
qualifies.
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Do they live with you? Your relative must live at your
residence all year or be on the list of “relatives who do not live with
you” in Publication 501. About 30 types of relatives are on this list.
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Do they make less than $4,050 in 2016? Your relative cannot have a gross income of more than $4,050 in 2016 and be claimed by you as a dependent.
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Do you financially support them? You must provide more than half of your relative’s total support each year.
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Are you the only person claiming them? This
means you can’t claim the same person twice, once as a qualifying
relative and again as a qualifying child. It also means you can’t claim a
relative—say a cousin—if someone else, such as his parents, also claim
him.
Checklist taken from this link.
