Edie Falco has her best role since “Nurse Jackie” in “I’ll Be Right There,” a dramedy about an over-extended mom still dropping everything for everybody’s else’s needs well past the point she should.

Screenwriter Jim Beggarly (“Free Samples,” “A Country Called Home”) must have tailor-made this part for Falco, one that honors her screen baggage as the mistress of unconventional mothers.

Wanda is another Nurse Jackie, a juggler everybody feels the need to lean on, but who barely has the energy and personal space to keep herself upright. All her amusing-but-needy mother (Jeannie Berlin), “addiction issues” son (Charlie Tahan) or very pregnant daughter (Kayli Carter) have to do is pick up the phone and “I’ll Be Right There.”

She’s a helicopter parent in a ’90s Buick station wagon, bopping through daily freelance-bookkeeping jobs but only after taking her mother to the doctor for a Big Diagnosis, sitting in with her drug-addict son as his therapist cans him for lying and trying to help her daughter get this rush wedding planned, performed and paid for, pretty much on her own.

She’s got an ex-husband (Bradley Whitford) with new kids, a ’60s Pontiac convertible he won’t part with and no great desire to help pay for Sarah’s nuptials, and a pub owner/bookkeeping customer beau (Michael Rapaport) who adores her but whom she’s cheating on with a college professor.

That teacher, BTW, is a vivacious younger woman (Sepideh Moafi of “The L Word: Generation Q”), who’s always dropping by for a quickie.

“I have everything under control,” she insists in her most brittle Nurse Jackie voice. But long before she says “What about what I want?” we’re wondering that very thing.

The kids? “They’re at a very vulnerable time in their lives,” now. And is all that hovering helping? “Your son’s a (lying) crackhead and your daughter’s an unwed mother.”

Her mother’s got her “poker gals” and a gambling problem. And that Big Diagnosis has to be “the Big Casino.”

“I’ve had a good run, haven’t I,” Mom jokes.

The beau? He wants to help pay for her daughter’s wedding. And the side piece? She never invites Wanda to HER place, never introduces her to her friends and colleagues.

Something’s got to give, so it does.

The bland predictability of this barely-amusing-enough rural New York (Pearl River) tale takes a back seat to some winning performances, with Falco setting the tone as another overbooked stoic mother, lover, counselor and secrets-keeper.

And she’s the reason this cast, with some roles little more than cameos, showed up for work.

Director Brendan Walsh — he directed eight episodes of “Nurse Jackie” — knows the drill as Boss Falco puts another put-upon mom through her paces, one “crisis” at a time, one more ball juggled into the air, one more cell call that she answers with “I’ll Be Right There.”

Rating: unrated, adult subject matter, profanity

Cast: Edie Falco, Jeannie Berlin, Charlie Tahan, Kayli Carter, Bradley Whitford, Sepideh Moafi, Michael Rapaport and Michael Beach

Credits: Directed by Brendan Walsh, scripted by Jim Beggarly. A Brainstorm Media release.

Running time: 1:38