Issue getting twins to cope with separate rooms

Posting in here in hopes of ideas to help my twins cope with sleeping alone in separate rooms.I have twins (boy and girl) who are just under 7 and just recently moved. Due to room sizing the option for them to stay in a room together isn't really an option so they've been thrown really into sleeping alone in their own rooms at night.Boy has coped pretty well, we've had a night light which projects the stars and at the moment he's sleeping through most of the night, only waking up to use the bathroom or to get a drink. Once that he'll need us to return on the night light and he'll go back to sleep good as gold.Girl on the other hand isn't coping as well and we've tried a couple of different things. Feel free to laugh because some of these may sound funny her reaction.night light, she found it too distracting to sleep in a room where stars or light was in it. She couldn't sleep and refused to even try whilst it was on. We turned it off but she was still up every hour and a half not wanting to sleep.-Music, we tried light lullabys and she found it more entertaining to make lyrics up or dance and we've tried whale music to which I walked in to her pretending to be a whale. This didn't work out.Her old routine, we tried bringing back the old routine, having both children in the same room as we read but neither child then wanted to sleep as they worked out this was a way to be reunited for sleep and set Boy back a little.My solution to problems so far has been to get black out curtains to block out as much light as we can which worked pretty well out and have a new routine set out for her which helped. We took her to build a bear to get a new furry friend which is also helping and we've gotten her down to sleeping but she's still waking up every two hours and really not going back to sleep. I'm concerned really she'll not manage to sleep. via /r/Parenting http://bit.ly/2WheLkh