Well, apart from a single item drop, I also added her species and the IDName (I can't believe I missed the latter), and the file was good to go. But the event wasn't, it kept crashing the game.
For guys who try to do something like I did, I'll tell you what worked so you won't be at the same level of idiocy at which I was.
I was trying to show 12 imps in an event, like in the imp den. In the imp den event, there're 12 speakers and they're shown like:
"1",
"2",
"3",
"4",
"5",
"1",
"2",
"3",
"4",
"5",
"1",
"2",
And in a similar fashion, I put 12 imp speakers and tried to show them like this (I started from 2 because 1 is reserved for the original character of the event, which is still present):
"2",
"3",
"4",
"5",
"2",
"3",
"4",
"5",
"2",
"3",
"4",
"5",
The game crashes with that setup, and since the imps didn't speak in my modification, I deleted all other 11 imps and showed the same imp 12 times, I mean, putting "2" 12 times.
Now the game doesn't crash, but now I'm busy grinding in hard mode in the forest so I don't know if that will work as intended.