Blonde Kathryn has become good pals with the show's judges Sharon Corr, Bressie, Kian Egan and new judge Jameela as well as co-host Eoghan McDermott, with the gang rallying around the popular presenter.
But a source said that the top TV personality is determined not to dwell on things and concentrate on her career in a bid to distract herself from her personal life.
"Kathryn split up from Enda last July and then headed off for a well-needed holiday to America, where she met up with some good friends of hers in Las Vegas. It was actually the space she needed to get her head around things and deal with the break-up," said a source.
"When she came back to start filming on The Voice in October, she wasn't going around announcing the split or anything. It was all kept quite hush-hush but it's a tight-knit crew on the show so people were obviously aware of her situation and were careful not to put their foot in it."