The Shealys are barely holding it together in this twisted and touching dramedy. Back in their West Philly home for the holidays, one thing’s for sure: The only way they’re getting through this is together. Dot is a loving look at the ties that bind — and drive us crazy. Support American Theatre: a just and thriving theatre ecology begins with information for all. Please join us in this mission by joining TCG, which entitles you to copies of our quarterly print magazine and helps…