In a statement, Grainne's spokesman said her main concern is for her 16-year-old son Conall.
The move is likely to fuel speculation that Grainne is planning a move to the UK, where she has recently taken on a number of presenting roles for GMTV and is regarded as a serious rival to Northern Ireland woman Christine Bleakley for upcoming roles.
The couple said their marriage has ended but they remain “good friends”.
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It feels like friends are few and far between. If you're not getting the help you need, ask why. It may be because you have been so preoccupied with work. Skipping special occasions and failing to return phone calls causes resentment. You have to be more engaged to sustain loving bonds. Call someone you've missed. It may take a few tries, but it's worth the effort. Be forthright about why you have been out of touch. Communication is the cornerstone of every healthy relationship.More