Who said "I won't turn my back on people who need me."?

This quote is attributed to Supergirl.

I won't turn my back on people who need me. - Supergirl

"I won't turn my back on people who need me."

Supergirl

"I'm not just Kara Danvers. I'm also Supergirl."

"Being a hero isn't just about having powers. It's about what you choose to do with them."

"I have to believe that there's good in people, even when they give me reason not to."

"My family is what makes me strong."