Most Wellsummer are not great layers, they are bred mostly for egg color, they start later and are sporadic layers, stopping and starting through the season, most laying age pullets will start a month or so later this time of year as opposed to one beginning earlier in the year due to the temperature changes and the decreasing light, I haven't found providing extra light for first season layers to do much, she should start in the next month or so, make sure she's still on a non medicated grower or an all flock that has higher protein so she has enough to continue growing and maturing as well as firing up the egg laying machinery.