RICHMOND, VIRGINIA Laurette Garlitz loves watching weddings unfold, gets her spirits boosted by a good country song and believes in the power of three. Three children, three grandchildren, and the three hospitality experts who started MOSAIC back in 1993. She, Mike Holland and Steven Niketas became a trio that bonded over memorable, comfortable, well-executed events — and scores of peer and customer accolades. Their business blossomed and they made magic happen. About the only thing Laurette can’t produce is a stranger. She just doesn’t believe they exist.