I also have a mated pair of parrotlets and I think that yours is saying that it wanted more out of cage time as it appeared to be looking for another way out of the cage, but was not overly concerned over it. The wiping of the beak could easily just be her grooming her beak. If you ever look closely at your birds beak you will find little uneven spots along the edges of the upper and lower beak, theses are from normal wear and tear and sometimes the bird will wipe these edges along the bars of the cage, on perches just like cleaning, but she is just smoothing these spots out. Perfectly normal behavior. I often joke that they are keeping the beak nice and sharp.