Showtime’s ‘SMILF’ goes where most shows don’t — working-class, single motherhood

Motherhood is messy. Single motherhood in your 20s is messier. Add to that poverty, co-parenting with an unemployed ex and dreams of making it as an actress – in South Boston – and you have the basic ingredients of “SMILF.”

Showtime’s half-hour comedy drama, created, written by and starring Frankie…