Her lack of success is probably because it's very hard to market quality black RnB artists in the UK - particularly female ones.
The market is so much narrower in the UK than it would be for her in say, the US, but US is lot harder worker, and a helluva lot more financial investment.
I mean when you're up against dross like Gabrielle - who surely has no soul - it may be time to leave the country. She had some minor successes before Prodigal Sista, but the track has probably only being B or even C listed on radio 1, and probably B list on Radio 2 or something.
"Mentally prepare? Why? When you plan something it never works. It's simple: get in, drive car, see what happens."