I would not rebook her. If you do, one of two things will happen:
1) She might cancel again and get the full refund (as of today airbnb is allowing all guests to cancel free of charge - currently for bookings before march 14 which could apply to her as the original reservation date)
2) Not cancel and leave you a bad review or something worse.
I had a similar case the day before yesterday, thought he did not try and rebook. My guest cancelled, normal strict cancelation applied, he got 50% back. He keeps sending me messages on whatsapp, saying a lot of bad things, and he actually booked in february, when corona was already on the go. I'm going to block him.