This would be impossible for me. For someone without a penis, she’s not being fair.
She could easily rub out 6, 12, maybe even 30 orgasms! I’ve seen girls rub out 6 orgasms in under 10 minutes with no problem. But that’s impossible for a guy. Let alone trying to keep yourself hard for that long!
But she doesn’t understand this. With multiple orgasms, she doesn’t realize how much a single orgasm takes out of a guy. And she doesn’t understand how hard it is to maintain an erection.
She doesn’t have to worry about any of that. She can have back to back orgasms without needing a “hard on”. There’s nothing there to get hard in the first place! Look at her flat pussy!