Mom! What did you do?!

Hi everybody, I am a single American mother. My Daughter Won’t Talk to Me Because I Refuse to Buy Her a $50 Water Cup
This is ridiculous! The girls at her school are obsessed with Stanley Cups, those branded water mugs they carry around. Is it really that big of a deal?
She said she’s being bullied because she doesn’t have one. I don’t want my kid to feel bad at school, but what kind of mom would I be if I bought her a $50 branded cup just to please some mean teenage girls?
I didn’t know this girl was this stubborn. It has been a week and she still doesn’t talk to me, or to say it better, she talks but she is mad and feels entitled to that thing.
Aha, ok then. So I am going to provide food, a clean house, clean clothes, a roof under her head, a bed to sleep and everything necessary while she is NOT going to talk to me for a week?
Ok Darling. So at that moment I decided to teach her a harsh lesson. AND PLEASE TELL ME, WAS I WRONG TO GIVE HER THIS REAL LESSON, because some relatives criticized me saying I am a bad mom for doing what I did.
The next day, she comes from school… and it is the usual, cold hello and straight to the room. Only this time, once she entered her room, I heard: NO, NO… MOOOOOOM, MOOOOM PLEASE…

The moment I heard her screaming, I rushed to her room to see what was going on. There she was, standing in the middle of her room, looking at the empty spot where all her usual luxuries were missing: her fancy bedspread, her cute decorations, her favorite posters, and even the makeup she had. I had cleared them out earlier that day, leaving only the bare essentials—a bed, a pillow, a blanket, and her clothes in the closet.

“Mom! What did you do?!” she cried, completely shocked.

I calmly told her, “If you think a $50 cup is more important than appreciating everything you already have, then maybe you need a little reminder of what’s truly important. You’ll get your things back when you start showing some gratitude.”

She was furious, but for the first time, she seemed to grasp the gravity of her behavior. I knew it was tough love, but I felt she needed to learn this lesson. Was I wrong?