Yesterday, I went to Gamestop to look at used games. I found Fallout 3 for $20, so I wanted to buy it. My mom makes me show her games before I buy them (herp derp ima becum a cereal killa) and I showed her Fallout. She said she would think about letting me buy it. I showed her some gameplay, and she didn't say yes or no. How do I convince her to let me get Fallout?
P.S. I have MW2, TF2, HL2 + Ep1 and Ep2, and Halo 3.