Her second single has flopped and her first didn't set the chart alight. If she's not careful she could end up dropped by her label. Cowell put Little Mix in to a group because they didn't have the personalities to be a solo act. It appears nothing has changed because the three who have done solo songs so far have all disappointed.
The dynamics of being a solo artist have changed so much in recent years though, you really need to have the 'pizzazz' or a USP to become someone in your own right, especially after being in a group. I also think the group had so much promo for their last album and as soloists have had hardly anything.
Popbitch about a year ago hinted that the girls own record labels were delaying their releases as they weren't confident of their solo careers. They have the metrics first hand.
Take a look at 1D, harry styles had a complete rebrand after his first album. He had an image curated for him by his label and or PR. It kept him in popular culture and gave him boost.
It's the same with new emerging artists, Chapel Roan who is this gens Lady Gaga. Katy Perry was originally a Christian singer who rebranded herself. Pink was rebranded early in her career too. Of groups, out of the spice girls I'd say only Mel C had significant success because she really defined herself afterwards. Same with Cheryl to an extent.
Perrie too struggles to shake her group image. What is her USP, if she's just returning to pop why is it safe pop. I think she's a phenomenal vocalist but should have possibly rebranded in another genre or image.