@mdl552 wrote:
Yes, they are filling a joint return and claiming her.
Then you cannot claim any of them on your tax return. If you have no other dependents to claim on your tax return you cannot have Head of Household filing status.
See this TurboTax support FAQ for Head of Household - https://ttlc.intuit.com/community/family/help/do-i-qualify-for-head-of-household/00/25539
