"A loving wife and mother, Momma is smart and quick-witted. She’s a hard worker with a lot of love for her family, and she keeps her children and their farm in order. Her quiet strength is the backbone of the family."
The Good Dinosaur
Momma Ida is first seen helping her husband, Poppa Henry plant some seeds while he does the plowing of their new soon-to-be corn field next to their farm. A few weeks later, after Henry finishes watering the field, Ida calls him to inform him that "it's time"; meaning that she and Henry are about to become parents to three children, much to their joy.
First, they witness the birth of their daughter they name Libby, then their son, Buck, and finally, their second son, Arlo. A few years later, after the children have grown a little older, Ida congratulates Libby for finishing her chore of watering the field, when it was in fact, Buck who was tricked by Libby to doing it, and angrily tells Buck to "get back to work"; much to his shock and annoyance.
When Henry finishes building the corn silo to protect it from critters who might eat from it and makes his mark with Ida, their children try to do the same but their father reminds them that in order to make their marks, each one has to earn it by doing something big, bigger than themselves; much to Poppa Henry and especially, Arlo's eagerness.
A couple of more years go by and after Buck clears a field and Libby plows the new open field properly, Ida and Henry allow them to earn their marks. With every fear and failure, Arlo is the only left with a mark unearned and Ida seems rather concerned with his phobias especially with the chickens he is charged with feeding everyday. After Buck messes and teases Arlo, Ida is present with her husband and Libby when her husband scolds Buck and comes to Arlo's defense even when Arlo almost gives up.
Days after her husband has been tragically killed for trying to save Arlo from certain death from a flood created by a storm when going after a critter, Ida and everyone else continue his/her own chore even before Arlo gets separated from home for chasing after the critter despite Ida being a little weak to gather the corn without her husband and with Arlo's help for the winter.
Days later, after Arlo returns fearless and triumphant, Ida and everyone else welcome him back home with hugs and watch him finally make his mark on the silo.