Caravarela, your daughter looks beautiful with the hairstyle and the bangs pulled back!
As a note, just because you might be able to leave it in overnight or a couple of days, doesn't mean your DD will agree to that. It depends on the kid and how the hairstyle feels to them. The first time we did BBB, DD (then 4) did the bun and unlike the above beautiful picture, she looked more like a kid whose hair was pulled back so hard that her face looked like she had plastic surgery. Her BBB appointment was at 10:00 and CRT was at noon. Halfway through lunch at CRT she was already begging for the bun to come out because it was making her head hurt. She made it less than an hour after CRT before absolutely demanding that I get it out and crying that she had a headache. FYI- although there is a lot of goop in the hair, it is surprisingly easy to brush through and somewhat style if you wind up pulling the bun down in the parks mid-day. There was no way she was going to sleep on that bun and wear it again the next day.
We have been back to the BBB and DD has done the Diva Hairstyle. She loves that hairstyle and it doesn't bother her at all, but even then, she does not want to go to bed until her hair is down and all of the goop is washed out of her hair. She hates to go to bed when she feels like her hair is dirty, which she does with all the goop they put in it. Your DD may be okay with sleeping on the hairstyle and leaving it in for the next day, but she may not.