Dropbox eligibility for H4 stamping using H1B petition

My Spouse had to travel to India recently while her H4 extension was pending and I had to withdraw her extension application once she travelled. Her I94/stamped visa got expired on 31dec2019 itself. Wanted to know if she is eligible for dropbox using my approved H1B pettition?

She should be eligible for dropbox appointment as it is less than a year. The system will automatically prompt you, if she is eligible for dropbox appointment.