The first reason is Aunt Esther selfishness makes her unhappy but then she starts to change
For example Aunt Esther allows Michael to have a hermit crab and In the beginning Aunt Esther was Yelling at Michael and saying “You hate it here and you hate me.
For another example Michael overheard Aunt Esther talking about him rudely over the phone,This shows that Aunt Esther is Selfish because She doesn’t care about others.
Michael is lonely and wants something or someone to care about him.
For instance Michael buys a