Wow,
Eponine??
It's so entirely
Les Mis that I don't know if it's usable. I don't think it's ever used anywhere other than
Les Mis either so there's no other association to kind of balance it out. I wouldn't use it.
If I met an
Eponine I'd want to be like, "
Eponine, come my dear,
Eponine, let me see you. You look very well in that new little blue hat..."
And every other time anyone sings
Eponine!!
Nicknames... Pony! I read a book once where a girl could
Ursula was nicknamed Pony which I didn't get. But you could go
Eponine --> Pony.