Molly Weasley was used to being underestimated. But it never bothered her.
She was a stay-at-home mom. She didn't fight in the first wizarding war. She only provided support from the sidelines.
She grew up in the times when men asked why witches bothered to receive magical education. What was the point they argued, they could stay home and learn household charms from their mothers.
But Molly had been an accomplished witch during her days at Hogwarts. Maybe she had never made Prefect or Head Girl, but she had earned 7 O.W.L.s and 5 N.E.W.T.s.
People never spoke of her successes related to raising her 7 children. It was merely an expectation of her. Motherhood wasn't considered worthy of praise. What did she do with her time once Ginny started at Hogwarts? They assumed she sat around knitting her famous sweaters all day.
They weren't completely wrong of course, her first year as a pseudo empty nester (her kids did live at home during the summer holidays of course) was quite depressing. She found herself bouncing around the house with worry of her children. She did her farm chores, cooked her and her husband's dinners, and knitted her sweaters.
But that year her daughter was taken into the Chamber of Secrets having been possessed by He-who-must-not-be-named himself. She had to admit (only to herself) that this moment was what spurred her into action.
Molly started training that following year after sending her children off to school, the threat of Sirius Black lingering in the air. Every day she studied. Everyday she practiced. She would become the witch that could protect her children.
Her training upgraded further when her family joined up with the Order of the Phoenix. No one suspected that her and Sirius Black had become training partners. Not with their constant verbal sparring.
Her obsession with protecting her family hurt her for the first time when she failed to defeat a simple boggart. Seeing the dead bodies of her children and Harry had driven her to tears, frozen in devastation. Her love for them could not make her act like this. She would not allow it. But yet, her sons looked so much like Molly's own brothers in their deaths….
When Dumbledore fell, she wasn't sure if she could continue moving forward. He had been so strong; he could do anything. She had finally accepted Fleur that night. The girl reminded Molly of herself, so passionate about the man she loved.
When He-who-must-not-be-named took over the ministry, Molly had been ready for nearly the entire year for a real duel. It finally came during what would become known as the Battle of Hogwarts. Grief, pain, and lost love filled her heart and her magic as Bellatrix Lestrange turned her wand on her, having just missed killing her daughter.
As her spell hit the woman's heart, she wondered if people would still underestimate her following this battle.
And as the dark witch fell, Molly, once again, found herself unbothered by this question.