Non-Dependent Child as Qualifying Child for EIC?

My disabled adult daughter lives with me.  In the past I've been filing as Head of Household and claiming her as a dependent because she's totally and permanently disabled and I provided more than half of her support.  

 

However, in 2019 my daughter's SSI benefits were enough to cover her share of household expenses.  Therefore I will not be claiming her as a dependent when I file for 2019 (my understanding is that I cannot do so because I'm not paying for more than half of her support).  

 

Since I won't be claiming her as a dependent, I'm confused about the following:

 

(1) Is my daughter still a "Qualifying Child" for purposes of my EIC claim?  

 

(2) Am I still eligible to file as Head of Household?