Lock screen password locked out

My daughter wanted a password on her brand new tablet so her sister couldnt get onto it. I helped her put on the password. We decided to use her name so we would not for get it. I put it on and then it asked me to repeat the password. Then it asked me if i wanted to show the password on the lock screen. I figured why not? She is 11 she may forget it. Anyways i pressed the power button once to click the screen off to try her pass word. IT DOESNT WORK. He password is clearly typed under the box where you type your password but the screen will not open. What the heck? Its been since last september and we still cannot figure it out. She even has a google account we signed into from my phone thinking there would be an option to reset it from there. But there is not. And when we try what google search had to offer on factory reset. Well that doest work either. It ends up just saying no comand with the little android guy laying down with his chest opened with a red triangle and exlamation mark in the middle. I cannot even find a number to call or a store to take it to for help. We bought it from walmart they when we called and talked to the tech department they say they did not know and suggested calling the manufacturer. We cant figure that out either. Please help us. Or guide us in the right direction. This 68 dollar tablet she got for her birthday and got to play for 2 days.