According to OK magazine, Walsh confessed that she is "so bored" of answering questions about her estranged Girls Aloud banmate.
"There is nothing to say," she said. "I can't keep talking about it. I haven't sent her a good luck message.
"To be honest, she's just wanted to do her own stuff for a while and she'll just be glad when she's got her single out there and she is doing the music that she wants to do."
Nadine's single 'Insatiable' only sold 117 physical copies on its first day of release this week.
Earlier today, it was reported that Walsh had claimed the group would "definitely" be reunited.