Hi Christo91
I have two exbreeding Bengals - one boy and one girl. They had never been outside when I rehomed them with me, having been with a breeder for approx 18 months and then in a small flat for 6 months or so with their previous owner.
Having always had cats that went outdoors before I wasn't sure what to do but did track down the original breeder who advised not letting them out. What I was able to do was construct an enclosure for them that they access during the day but appreciate that is not an option for everybody due to cost space or cost.
As I have a 14 year old "moggie"who has always gone out I do put the Bengals into the dinning room (which was their original safe room) late evening for the night so that Odo (the 14 year old) can come and go as he pleases - we open up the enclosure for him. We then reverse the process early the next morning! Odo finds the Bengals a bit "full on" and likes peace and quiet during the day so heads off to one of the bedrooms for the day after breakfast.
I guess what I'm saying is that different solutions work for different situations
Malcolm does have a little "moan" initially after being in the dinning room (although does go in there happily!) but then settles down very quickly and we hear no more. Dany is often hovering around the dinning room for 30 mins before the usual time they go in for the night and we never hear from her.
What I would say is that all 3 cats are very routine orientated and anticipate what is going to happen- what ever routine you establish I am sure your girl will adjust!