Are you sure it is the same pullet?
The egg laying process is pretty complicated. There are hardware and software issues that need to be right and sometimes it takes a while for a pullet to work out the bugs.
It's pretty normal for a pullet to start looking for a good place to make a nest a week before she starts to lay. It sounds like yours did that. They don't always choose our nests but they often do. Since she laid her first egg in there it looks like you did your part right.
But for that to work they have to control when to lay. Do you know when those eggs were laid? It sounds like they may have been laid at night while on the roost? That may be her software issue, controlling when.
Most pullets work these bugs out petty quickly, usually within days but pretty much by two weeks. I have had some that took longer and one that never did. One pullet continued to lay from the roost for well over a month. There was just something wrong with her instincts or internal wiring. But that was one pullet out of I don't know how many over the years. To me it's kind of surprising how many get it right from the start. Most do.
Some pullets seem to drop an egg wherever they happen to be, on the roosts or just walking around. But eventually they gain control of the process. That's when they start to lay in the same spot every day. When you consistently see eggs in the same spot every time that's where she decided to make her nest. I don't think you are at that point yet.
That may be in one of your nests it may be somewhere else. When you get to that point come back and let us know. If it is in your nests, great. If not we can discuss how to move her there.