Meruin nodded her head and took the things off Liz's hands. Meruin followed her and looked at her opponent. Marucus, part of the Student Council, extraordinarily strong and was able to nullify magic. 

In other words, Liz was his natural enemy. Her water body was not magic, but her actual body, and Marcus did not have any elemental magics. Unless he somehow had a way to affect Liz in her true form or managed to beat her before then, then this fight was one-sided.

"Good luck," she said to Liz. Oh, but that was showing favoritism. "And to you too, Marcus. Give the Student Council back a bit of our pride."

She did here the conversations between several students, after all - but it also completely slipped her mind that she didn't do much for their reputation by showing up near naked in the canteen. Oh well.