Persona 4 Golden question

I was trying to fulfill Margaret wish with fusing an ippo datara with the required skill, but when I fuse the persona she asked for nothing happened, hot do I have to fuse personas so Margaret recognize the fusion as fulfilling her request?

Thanks

If I can still remember, you have to equip the requested persona first before entering the Velvet Room. Then, talk to Margaret :3

Try confirming the condition for the required persona again. That should work. I don't really remember so I'm just throwing ideas out there.

You'll need to re-enter the velvet room after fusing her persona.