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Misha was voted out of the competition tonight, but Rowland explained that she expects her to be a success.
"I think Misha has shown so much of herself in the show it won't take any time for somebody to sign her," she said on The Xtra Factor. "It's only a matter of time."
Rowland continued: "I'm definitely going to be there every second of the way. When she needs me, she's got my cellphone number - she can call any time.
"I'm her biggest supporter and I'll always be there for her no matter what. I'll do anything for her, I will."
The X Factor final begins on Saturday at 8pm on ITV1.
> Read more coverage of The X Factor
