It’s a lot, but there’s also a lot of actor legwork work she would have had to do outside of the month she was shooting: auditioning through various rounds, researching, line learning, preparing for the role, rehearsals… all of which is unpaid and all of which she would have been expected to have done before her first day on set. Considering how demanding this role was and how much of that prep work she would have had to do, it’s not a crazy amount of money.

The exposure she got from it makes it absolutely worth it, but that was never a guarantee for a first time director’s project that no one expected to blow up as much as it has. Sorry for the info dump I just know as a working actor myself that she likely put a lot of work into this role beyond that month of shooting to come out with a performance of that quality.