What the heck!? Is this fair?

So this morning my sister wanted to listen to her ipod on her ihome and my ipod touch was in there. So she takes it out and is like where is my little white thing that I stick my ipod into on here?! Heck if I know, I took it out a long time ago. So I said I don't know I'm going to... and she cuts in yelling UGHH!!! YOU BETTER FREAKING FIND IT!!!! well i've looked and I can't find it. If I can buy another one I will. She goes around huffing and puffing and sighing like a big baby around our house and yelling at me so of course, like always, she gets mommys attention. So my mom starts yelling at me telling me if I don't find it I have to give her my ipod touch! She has an ipod nano and an ihome that she didn't even pay for! I payed for my ipod touch with my own money I saved up! Now, since I KNOW I won't find it she will most likely get my ipod touch. That makes me so freaking angry! Plus, my sister lost my phone charger and she didn't even get in trouble! So I was stuck without a phone charger and she just said oops! I can't do anything by telling my mom I payed for it by myself because then she will get mad and make me give like everything of mine that she knows that i love that she bought! >.< please help. im very furious right now.