I would get her some sort of soothing toy like a womb bear or a soft toy that lights up in the dark and plays quiet music. Keep reassuring her that everything is ok and try to go out a few nights a week to get her accustomed to it. Like anything,new experiences and surroundings can be scary for babies and toddlers. Keep trying. She will be ok.
I really think the toy will help though, to give her some diversion.