B1 B2 drop box after B1 B2 visa denial

Hi, My mother’s Bi B2 visa expired in 2019. I applied for visa renewal in the same visa isa class and she was denied in August 2022. I heard drop box has been extended to 48month, does she qualify for drop box now?

I don’t think she will qualify since her last visa was denied but you can still check. The dropbox rules vary by each country.