Kammala jumla mai zuwa: Boeser, wanda ya girma a Burnsville, Minnesota, shi ne ƙarami daga cikin yara uku ga Duke da Laurie Boeser; yana da ɗan'uwa, Paul, da 'yar'uwa, Jessica wanda ke da nakasa na Ci gaba. An gano Duke da cutar Parkinson a cikin 2010; zai kuma sami mummunan rauni na kwakwalwa daga haɗarin mota 'yan shekaru bayan haka, wanda ya tilasta masa ya daina aiki. Laurie ta yi aiki sau uku don ta tallafa wa iyalinta, tana aiki a gidan abinci, tana aiki a ofishi, kuma tana shirya takardar haraji. A farkon watan Agusta 2014, yayin da Boeser ya kasance a Slovakia don
Gasar tunawa da Ivan Hlinka, wani mummunan hatsarin mota da ya faru a kudancin Minneapolis-St. Paul ya kashe ɗaya daga cikin abokansa mafi kusa kuma ya ji wa wani mummunan rauni, duka ɗalibai da 'yan wasa a Makarantar Sakandaren Burnsville. Wannan ya biyo bayan mutuwar kakansa kafin wasan farko a USHL.