Answer:
Assemblage is the bonding of shapes or objects, using glue, pasting, nailing, soldering, and more. Assemblage is basically a three dimensional collage. Assemblage is most common in modern art.
Mary Maloney takes the leg of lamb out of the freezer and the narrator notes, she was like a baseball player hitting a home run. This foreshadows that she might swing this leg of lamb, at her husband!