I have video of Rhea Mae and Tiago that I took when we first visited her nest site after she just arrived. It shows her and Tiago together at the end of the nest ledge. I am pretty sure they were vocalizing and bowing and getting to know each other. I will have to take the time to post that.
Rhea was the first Peregrine I had seen in person and I instantly fell in love with her. She died soon after that. I so respected Mae and had wanted to honor her also. Hence the name Rhea Mae!