PRIVATE PRACTICE - "Shotgun" - Addison and Cooper counsel a couple who must make an unthinkable choice, to decide which one of their ailing daughters to save with their newborn's core blood. Sam is dealt another blow when he finds out Dink's intent to marry Maya, and the rest of the gang runs an intervention on a still distant Naomi, on "Private Practice," THURSDAY, FEBRUARY 4 (10:01-11:00 p.m., ET) on the ABC Television Network. (ABC/ERIC MCCANDLESS) TAYE DIGGS, STEPHEN LUNSFORD, GEFFRI MAYA, ROSANNA ARQUETTE