Hola! I am unfortunately going to be away all week, but in the mean time, I would like to know something. Which should I write?

(For Darien, in Serena's body): Darien hit his head against the wall, OR Darien hit Serena's head against the wall?

(For Serena, in Darien's body): Serena hit her head against the wall, OR Serena hit Darien's head against the wall?

If you have an opinion please tell me which, it depends which is best for the readers! I will write more during the week, but won't be able to post until next weekend. So sorry! Please review! Thanks! Mwah!