What happened to Trelawney?

[brwneil]

No: HPFGUIDX 91302

Dolores was about to kick Trelawney out of the castle when Dumbledore 
steped and said that Umbridge had the right to fire her, but 
couldn't make her leave the castle.  The headmaster decided who could 
and couldn't live in the castle.

One would assume then that as soon as Dumbledore was gone and 
Umbridge was made Headmistrest she would have sent Trelawney packing 
as one of her first acts, but we hear nothing.  Is this sort of an 
unwritten Flint?  Or did both Rowling and Umbridge forget she was 
still in the tower drinking her sherry?