I'd put the pad in box with sides at least 3-4" higher than pad to keep her form kicking out fakes...or real egg! You don't have to put anything nest-like in there if you don't want....if she's gonna lay she's gonna lay. Pullets often lay their eggs all over the place at first before they find the 'good place' that you provide and bait with fakes and get some control. Can take up to a month or so for them to settle down and lay regularly where you want them to. Chickens take patience...lots of patience, observation and understanding. Quoting centrarchid: "Make every effort to understand your chicken's biology and the environment that supports it." Egg might be blue, but it probably won't be big.......pullet eggs are small for anywhere from a couple weeks to months and months.