Hi, Anna! No worries at all. I know this was a busy week for you USians. :)
Lucia and Thomas quite likely get along like a house on fire. She's not the sort to encourage ruffling Desi's feathers... publicly, that is. Covertly, she very likely enjoys Thomas's attempts and knows they come from a place of affection and fondness.
I've heard things about Desi and Ottiley. I would love to thread her and Lucia at some point, get a sense of how they like each other. I'd very much like it if they were friendly.