Better advice that she gave to Beckett was on that final episodes Of Season 4 episode 20 The Limey when she is at Kate´s appartment and she says to Kate that she as to tell what she feels and Kate is all like "I can´t admit that I love Castle..." but in the end she admits it all to Lanie. I love that scene! Pure friendship!!!
Yeah tones Of teasing. I can imagine her face like Wow, shut up Girl, you didn't... Oh and Esposito's reaction will be unique, I am shure, since he always seens like such a Caskett Fan!