‘Thelma’ is fun on its own

In her charming “grandma gets scammed” comedy, “Thelma,” Squibb plays a 93-year-old who sends $10,000 in cash to con artists because she’s convinced her grandson was in an accident.

When relatives point out the error of her ways, Thelma decides to right the wrong. She chooses to “follow the money” and track down those who did her in. With the help of a friend in a retirement community, she drives a motorized scooter to the location and, well, anything’s possible.

In writer/director Josh Margolin’s hands, this is a sweet valentine to grandmas and the grandsons they cherish. Her Danny (nicely played by Fred Hechinger) is just as frustrated with his parents as she. Both are misunderstood. Both think they can make this mistrust go away.

To her credit, Thelma takes along friend Ben (played by the late Richard Roundtree, who was “Shaft” on screen). He tries to convince her some of the moves are risky, but she’s not deterred. Thelma gets to her destination and then it’s “High Noon” for the thieves.

While bits of action seem over the top, much of the situation is believable. Thelma, for example, has problems with a computer’s mouse and can’t quite get the hang of doing business online. Advanced age also doesn’t mean dementia’s afoot.

Thelma doesn’t have the trust of her daughter (Parker Posey) and son-in-law (Clark Gregg) but she doesn’t solicit it, either.