Clearly this teacher did not know who she was!
Olivia snatched up Nemo's hand and held it in a show of unity. The stage was set and she was ready to perform. "/Actually/..." she started in a tone that suggested she intended to interrupt, taking a slightly domineering stance as if challenging the other to strike her. "I think I might love this girl!~ She saved my life, and /I/ think she deserves /your/ respect!" she exclaimed in a defensive tone, completely dropping all subtly in her flirting and going straight for the throat. Sorry, Nemo. This one gets her values from cheesy romance novels. It had seemed like a great idea to her anyway. Standing up against a teacher for her and admitting her feelings was clearly an excellent idea that could never go wrong in any way.
...Or, y'know. Nemo might think she wasn't being serious about that first part and she could get a detention.
Such was the risk of the overly-eager romanticist, willing to jump headfirst into things and imitate cheesy romance novels in an attempt to impress her prospective lovers. Meanwhile, if Olivia felt the cold she honestly didn't show it all that much. Perhaps the constant fangirling she did over others kept her blood circulating nice and hot.