Dotty

An annoying little brat.

She always reforms.

She loves to cause mischeif.

Shown at approximate actual size.

Unwilling Prey.

Forewarning: Foulmouthed. She will curse at you lots. Don't take it personal. Just see it as incentive to shut her up.

Do _anything_ you want to her.

Shrinking to her size is fine, as long as it's an ability you've got, and not just a plot device.

May be willing for non vore things, but you have to make friends with her, and that will not be easy.