Thanks for the chapter!
Considering she had the same parents as Leon, Jenna must have gotten her personality and learned all the wrong ideas from Zola. Probably doesn't even think she did anything wrong. Clara is definitely up to something. Her phrasing and wanting Olivia to 'introduce' her to the 'baron' sounds like some formal etiquette among nobles. If not, then why didn't she just ask where Leon is presently and introduce herself or refer to him by name rather than title? As Leon had mentioned earlier Olivia is very unaware of the formalities, customs, and etiquette among nobles so there are probably a lot of strings and unspoken but noble expectations involved with Olivia agreeing to introduce Clara to him. Also, that comment on Olivia being a special student and not having much to offer seemed more a veiled insult with a flimsy apology to avoid criticism. Guess will just have to wait and see, although betcha dollars to doughnuts the blond(?) in the last panel is some really high ranked, spoiled more rotten than the other women, narcissist trying to cobble some crude plan she thinks is clever to 'avenge' herself on Leon for money lost betting but barely smart enough to work through others (likely Clara as multiple plots occurring at once are messy and complicated to keep straight.) Probably going for bullying, harassment, trying to make Leon look bad socially or publicly, and maybe get some money off him.