"Did the scare go to far?"
Oh no, the poot little harpy that put everyone asleep, dropped a guy on the girls to kill them, and then buffed other monbsters to attack the MC and Theresa, and probably killed lots of civilians before appearing in the story, got so scared she fainted!
The "daring smile" line in last chapter was already pretty stupid, but this one takes the cake. The author probably intends to make the harpy a tamed monster or a new ally of some sort, but at this point only they know that, so commenting on the harpy in a positive "isn't it cute" way is premature and in opposition to the bloodthirsty monster we've seen so far.