Of course quitting is the wrong answer! You can never give up on you dream, big or small. Life is to short to never finish what you start. Trust me, I know. I have a stack of notebooks FILLED with drawings and short little segments of ideas. And another thing is a little arrogance never hurt anyone. If Zahraa feels like they stole her idea, she feels like they stole it. You cannot change that, no matter what you say. I've felt the same way before, sitting down and thinking "Oh this would be an awesome idea!" and a week, or a month, or even a year later there it is, someone else had the same thought. But what she needs to remember is that if someone else had the same idea, or if they actually stole it, it was seen as a grand idea to them! So she can still feel proud in her ideas.