Matt H. answered 01/30/15
PATIENT :-) Elem/Middle MATH and WRITING; HS SAT and COLLEGE ESSAYS!
There are a few possibilities here. At one point he talks about winning her heart as being like cutting to the center of a Christmas pie.
But I think what you're looking for is that Katrina is compared (more than once) to the fruit growing on the trees in the father's orchards. It's the idea that she is naturally beautiful and perfect, and if you look back in the story, you can find some of the specific images the author uses to convey that.
Hope this gives you a good start!
Matt in NY (actually only about 3 miles from Sleepy Hollow!)