Why did Eulalie throw away Esi Kim's gift and how did that action reveal her character

When Esi presented Eulalie with a gift of snails, which were a rare and expensive delicacy during the dry season, Eulalie threw them out into the yard because she was disgusted by their slimy appearance. This act reveals her thoughtlessness, as Eulalie doesn't consider accepting the gift for what it is..... a gift, an example of Esi reaching out to her son's wife. She rejects the gift, and in turn, she appears to be rejecting Ato's family.