When Andrea and Mike are talking about her surgery and getting ready for bed, Andrea removes the pillows from her side of the bed. She then takes off her yoga pants and the pillows are back. She then gets into bed and they are gone again.
"Generations" are counted by the immigrant, not by the first person born in a locality. So, if Sharon's parents immigrated to California before having Sharon, then Amelia is fourth generation Californian, not third.