If she is over 23 and had more than $4300 you cannot claim her as a dependent. She is too old and made too much money. She is neither a qualified child nor a qualified relative. Sorry. She can file her own tax return and she will be eligible to get the $1400 recovery rebate credit for herself.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
