Last August, Rachael Allen threw a 70th birthday party for Allen’s Crosley Lanes, a 42-lane bowling center in Vancouver that her family has owned for nearly four decades. The celebration was bittersweet for her, however, because it took place the day before what would have been her husband Don’s 68th birthday. Don Allen died last May from complications of non-Hodgkins lymphoma. Don grew up in the bowling industry, learning the trade from his fat…