She clearly says habeon with an n.
And I know that wasn't one of the conjugations but it was clear it couldn't be habeo. I know 3rd pp end in -nt and eventhough I actually knew it wasn't habeont, it made me doubt and that still seemed a better guess than habeo which it clearly wasn't.
Yes it's habent not habeont I knew habeont didn't feel right but well it had to be something
At a stretch it could have been habeum but that's nothing either. (A habeam does exist but that's subjunctive and we're not there yet. Gosh that's gonna be something.. the pronounciations of all the forms)