Glare, spit at/towards... use her plasma spit near her... Just cuz she cant hit her doesnt mean she cant make her jump x'D 

Essentially she is going to be THE BIGGEST asshole dragon possible. Even if she gets punished for it. Shed rather die than be some foods slave. So :')

Until the food aka mage opens up to her to why she NEEDS her. She will be of no help at all :') Or at least make it very difficult for the mage to force her.