The Kane house in late November carried the hush of coming snow and the glow of memories too big for words.

It was the weekend before Thanksgiving, and for the first time in years, all three Kane children were home at once: Lily from Boston after a rare three-day break in her pro schedule, Everett from Minnesota after a road series, and Clara from Wisconsin for a long weekend between tournaments.

Rowan and Holly had turned it into a quiet celebration—no big plans, just the ...