Type of music:
Mid tempo, big beats, dubstep influences. WAY less autotune, and take at least a year to write at least half the songs. She'll get so much more praise if she shows off truely her voice and writing skills, that's one of her downfalls that she doesn't have any influence on her music! That should change.

Promotion:
Three singles preceding the album. Hopefully advertising the different types of song on the album. Make people completely aware it's a new album coming, not a Greatest Hits album or an EP by only releasing one single.
For the first single she should release the video (a GOOD video that people actually want to watch) prior to the song on iTunes for at least two weeks (even in America) and roughly a month before it's released in the UK.
While the video's out in America, but the track isn't released.. She should really push radio play and VEVO advertisments. So everyone knows/heard the song.. so as soon as it comes out there will be a big surge of download and hopefully get number 1. Therefore also hopefully getting BBH100 No. 1.

Then for the second single, she should not worry so much about chart success.. but about good reviews by releasing either a slower song or one that shows off her voice. Use this single to gain unusual interest in the new project. Release the video and the track simultaneously. For this, maybe do some televised acoustic performances if she has the guts to do that.
Release the song 3 weeks after the video in the UK. Do a few TV performances on respected TV shows.
By this time she should say in interviews that its from a new album and give a release date, make it certain and get the interest building for the release date.

3rd single. Massive beats, catchy hook, soaring chorus, club anthem type song. release video prior to release in UK and USA, (2 weeks USA 4 weeks UK) MASSIVE RADIO PLAY and perform on the first X Factor live show. (UK + USA) tell presenters the single is out RIGHT NOW cause it would be released on the sunday she would perform. Then make it obvious the album is out the next day.
Many magazine interviews, morning and daytime shows too.
She can't afford to be picky about where she promotes as her sales of each album have only gone down since her first.