Imho, she just wants to get her stuff and get out...they both should have been on the lease. my understanding is that as a landlord, all parties need to be on the rental agreement as if you have someone who is living there and not on the lease, you don't have a way to evict them and they can become a squatter. why would her landlord want her out? I would think as you said, she could easily work it out with him/her. she has plenty of money. why lose a tenant with almost unlimited resources at this time?
Surprised that they even rent.
This story is strange...
The divorce will be beyond messy...