My Four Alpha Stepbrothers

"I, Ember Blake, accept you as my mate," I said, rising on my tiptoes to reach his lips. This would be my first kiss ever. I had no experience, but I trusted him completely. My eyes fluttered closed, waiting.
My lips never reached his. A painful slap struck my cheek, knocking me to the ground with such force that my vision blurred. Something damp covered my face. When I touched it and looked at my hand, I realized it was shaving cream Noah had smeared on me.
Within seconds, cheers erupted in the corridor. Students emerged from nearby rooms, mocking me relentlessly. Their laughter echoed in my ears, each sound like a physical blow.
After Noah Winchester publicly humiliates her on the first day of school, Ember Blake runs from school in tears. After Ember sobs out her story to her mother, her mother took Ember to her new stepfather's mansion where she met her new handsome stepbrothers.
What would change to Ember’s life? Why her mother warned her not let her stepbrothers touch her or get in her head?