Higgins and the great big scare

Henny has just one week to diagnose what's happened to Higgins, the neighbor's cute little puppy. Higgins liked playing with her before she left for a trip to Grandma's, but now that she's back, Higgins only cowers and hides in the thorn bushes. What could have gone wrong in the time she was gone? Henny and the little neighbor children are determined to help Higgins!