i would work on her conifidence, she seems a little shy, its the bite and hold action shes withdrawing from, get a tug toy or something covered in a bunny skin and play tug with her, get her to really sink her teeth into it and try to pull it out of your hands,,after she get used to that , introduce a squeaking noise during the game, until she used to the squeaking , while playing best of luck,,
yes it seems shes soft natured but there will be a wee demon waiting to come oot,just be patient,i reckon she,ll come good,