What does Theo buy for Sara when she returns from the Blackwell Island Asylum in the novel, The Address?

After Sara returns from the Blackwell Island Asylum and begins to work on collaboration with Theo, he purchases her a fancy sewing machine as an impromptu gift (305-306). The sewing machine is a particularly intentional gift, as Sara had previously been harassed by Mr. Ainsworth when she was a seamstress. Theo's intention is to give Sara a completely fresh, empowered restart on life.