Considering how hard this person is going to work, and considering the toxic levels of entitlement that will surround her 24x7, I would say that $100K is a low salary. She could do this for a year, maybe two, then treat herself to a downpayment on a condo. But first she'll need to work with a therapist to reclaim her self worth.
We shouldn't hate the rich just because their purchasing power extends a million galaxies beyond ours. But it's OK to repudiate excessive entitlement, because that is poison - not the money, not the size of the house, not the private jet and not the helicopter, but the ability to demand outcomes that are demeaning to those who serve them - that is horrible. Not all wealthy people do this, only some.