She is currently the only one greeting in there yes
Her lines are usually quite long, sometimes they look a lot longer than they are. They line up her next "set" outside of the greeting area, then once that set time starts, let everyone into the garden, if you're unsure ask the attendant and they'll be able to tell you more.
But with all the frozen madness going on I'm sure it'd be worth it to go right at rope drop and see her with minimal wait