There’s only a single flash-forward in Season 2 of “Bad Sisters,” and it’s the very first scene. Four of the five Garvey sisters — eldest Eva (Sharon Horgan), nurse Ursula (Eva Birthistle), one-eyed Bibi (Sarah Greene) and baby Becka (Eve Hewson) — are in a car, attempting to dispose of a dead body. Becka’s face is swollen […]