Where there has been trauma, I would aim to connect at a younger emotional age - so if she is ten, she might have a ten year old’s interests but only a seven/eight year old’s emotional ability to handle those interests.
The on-screen world feels safe and controllable. You’re aiming to make the real world feel just as safe. So regular mealtimes, bedtimes etc and other positive routines that build security like maybe a weekly movie night at home with microwave popcorn, or a daily time when you’ll do something together.
PP’s idea of following her interests is great - activities you can do together without pressure are ideal. So you could find a Roblox colouring sheet, and start from one end each and do it together. If you get ten minutes of good connection with her through that, you can build on that next time. I’d aim for two or three bursts per day where you give her undivided positive attention - it doesn’t matter what you’re doing together - and let it grow gently from there.
Also, if you show her you’re looking after yourself - eating well, getting rest, maybe trying out a hobby etc - that will give her confidence to do the same.
To answer your specific routines question:
holidays - up around 8, bed around 8.30 Free to choose how to entertain themselves during the day as long as they do their 5 daily tasks (make their bed, put laundry away, read, ten mins music practice, feed the cat). No iPads or gaming after supper. No screens in bedrooms for anyone inc adults.
Naturally term-time brings its own structure, and long days, so weekends are pretty relaxed.