Friend gifted me, how do i refund it?

Ok, i realize how bad that sounds, that you shouldn't say no to a gift because its pretty rude and all, but my friend gifted me the wrong skin. She gifted me Pulsefire when she meant star guardian (Which i honestly prefer). Usually its the gift giver that ask for the refund but as the receiver i was hoping i could give the ok to refunding her. (She doesn't know btw)

I say this here because i have no idea where to put this question/request.

[sg-ezreal] Best Boy :3