Her hostility toward all strangers, her apparent extreme stupidity, and her and others' apparent worship of Mog all suggest probably the most common of titanspawn: a giant.

If you want to get confirmation of that and/or narrow down what type of giant despite her inability to describe Mog's appearance, followup questions that come to mind include:

"Does Mog feed you and the others his blood?"
"Are you certain Mog has two eyes?"
"Does the temperature change close to Mog?"
"Do Mog's features appear sooty?"