pictures not focused?

I own a Vivitar ViViCam 8690. These are numbers on the bottom: MID0051009 E1264A01502334. My camera was working fine and I was getting beautiful pictures. One day I found my 2 yr old granddaughter playing with it and she was messing with the buttons since then the pictures I get are not clear, they are yellowish with faces too white. I have tried going to menu and adjusting but to no success. I know all it needs is adjustment. I hope you can guide me on what to do.