She has a scene with a goblin soldier hehe, if you want I can explain what to do. or would you rather find out how to unlock the scene?
You must first recruit the "save stone" (she join to party after completing the first dungeon). Then, with the save stone in your party, you must go to Margarita. She will talk to you further and ask you for a "goblin soldier." Now you must recruit a goblin soldier, which costs 850 gold. Then, go back to Margarita.