It was midnight, and Raph was currently sleeping in a seating position on the carriage, or at least that's what he tried to make it seem like.
Unexpected situations were occurring, and it didn't seem like it was going to tip anytime soon. He had a lot of things to think about as a result and was unable to put himself to sleep.
He was so worried about Azby and the others and decided to remain awake while his aura was applied around the premises in case of intruders. He could have still used it even if he were sleeping, but the series of events coupled together made it difficult.
In the carriage, sleeping beside him, were Colyn, Criz, and Azby.
'She isn't sleeping though'. Raph could hear their heartbeat, as well as their breathing and he could tell that Azby wasn't sleeping either.
There was no telling when the enemies would strike so it was understandable. '.....if they strike'.