context (this is not canon) 18-year-old Jules returns to Australia to visit his family. the girl next to him is his 26 year old cousin. As children Julse wanted to be very much like her and they were very close. perhaps Jules' spontaneous and crazy behavior is a reflection of this cousin, who knows. they might have fun tormenting the group (Tay, Izzy, Becky, Miranda, etc...).
She has no name at the moment unless someone has a good one for her.