Final answer:
Joyce's aunt in Seattle is not specified or mentioned in the provided information. We cannot determine who Joyce's aunt in Seattle might be.
Step-by-step explanation:
Joyce's aunt in Seattle is not specified or mentioned in the provided information. The passages you provided contain references to various characters and their families, but there is no mention of Joyce or her aunt in Seattle. Without further information or context, it is impossible to determine who Joyce's aunt in Seattle might be.