She didn't immediately go in to the nest, but showed quite a high level of caution, looking around and seemingly making sure the coast was clear. In fact it took her more than a minute before she eventually flew up to the nest, but straight back down still with a beak full. At first I was concerned that she was cautious because she sensed me nearby but I am confident that this was not the case because eventually she went under the over-hang and presumably, in to the nest.