Complex sentence: Back at home, Tom shows Mandy the updated detachable version of the model of the home he built for the two, but Mandy sees this as a metaphor for her relationship with her father and tells him that she doesn't want to be detachable.
Split into simpler sentences: Back at home, Tom shows Mandy the updated detachable version of the model of the home he built for the two of them. However, Mandy sees this as a metaphor for her relationship with her father, and explains that she doesn't want to be detachable.