Harding also said that it is "upsetting" for the group's fans to hear of reported arguments.
She said: "Of course it worries me there are reports of fallouts between us, because it's upsetting to our fans.
"I'd hate to think we'd end on a bad note."
The singer also revealed that all of the girls were "more opinionated" this time around.
"Me and Nadine are more music-oriented – more vocals – and the other three are more [about] dancing. I'd put my foot down about the music side of things," she admitted.
"When there's five of you, it's difficult to have a say in everything. I'm looking forward to having more control."
She added: "We've just had eight weeks of being together non-stop, so it's nice to have a break. It's like being sisters – after a while you feel a little bit suffocated."
that's why she's mad.
