Teen Took His Mother to Prom to Honor Everything She Sacrificed for Him

My mom got pregnant with me in high school. My bio father bailed the same day she told him.
She missed her prom. Traded a glitter dress for diapers and night shifts. Studied for her GED while I slept beside her.
So when my own prom came around this year, I told her:
“Mom… you missed your prom because of me. Come to mine. With me.”
She laughed. Then cried so hard she had to sit down.
My stepdad Mike smiled like he already knew how much this meant.
My stepsister Brianna?
She nearly choked on her Starbucks.
“You’re bringing YOUR MOM to prom?” she scoffed. “That’s actually pathetic.”
I ignored her.
Later she leaned in again..
“What’s she gonna wear? One of her church dresses? You’re gonna EMBARRASS yourself.”
Still ignored.
Prom day arrived — and my mom looked beautiful.
Soft blue gown. Vintage curls. That smile she only gets when she’s nervous and proud at the same time.
She whispered, “What if people stare? What if I ruin this?”
“Mom,” I said, “you MADE my life. You can’t ruin anything.”
At the school courtyard, Brianna strutted over in a glitter dress that probably cost more than my car.
She pointed at my mom and said loudly:
“Why is SHE here? Is this prom or Bring-Your-Parent-to-School Day? What an EMBARRASSMENT.”
Her friends laughed.
My mom’s face fell.
Something in me snapped.
But Brianna didn’t see Mike step forward — slow, calm, dangerous.
When he heard her words, he looked straight at her and said:
“Brianna. Sit…”