No. The brain shrinks during dehydration. The whole body does except the bones. The body tries to drink itself. It's like the difference between a grape and a raisin.
They're just alerting people to the possibility the left wing Cult of Death and Felos might be showing pictures of a smaller brain as "proof" she was a zombie. Pictures won't mean anything. The brain will be smaller due to lack of moisture.
OMG. I heard Greta van Sustern last night asking someone about what would happen during the autopsy, if pictures would be taken, and if the public could see the pictures. Whoever she was asking told her that Michael Schiavo would own the pictures and could do whatever he chose to do with them.