Icardi was again left out of the Inter squad by head coach Luciano Spalletti for Monday's (AEDT) 1-0 Serie A loss to Lazio at San Siro.
Spalletti stripped Icardi of the captaincy six weeks ago and the Argentina international has not featured since.
After Sergej Milinkovic-Savic's early goal proved decisive in Milan, Spalletti described the ongoing talks between Icardi and Inter over his return to the team as "humiliating".
"It's obvious for everyone to see what happened. It's obvious," he said, amid reports of a training ground row this week. "The way he has behaved, he needs to stay away and others have to play.
"Negotiating with someone just to get him to pull on the Inter shirt. What, do I need to email 20 lawyers and ask them if I can call someone up?"
Icardi and Nara were present to see Inter's home defeat and the 26-year-old's agent responded to Spalletti's latest criticism.
"Mauro is ready and it's all down to the coach's decision," she said.
"If Mauro came back, would he make the same choices? It depends on what choices... I don't know. It depends on how you see the situation.
"Mauro has not yet spoken: he only expects to play and is preparing for this.
"His [Spalletti's] words are not a step back. Mauro is used to hearing so many things around him, but then focuses on what needs to be done to help Inter on the field."
Nara said Icardi's silence in the media should not be taken as any indication over his relationship with the club.
"He had a television camera right in his face throughout the game," the striker's wife continued.
"He was willing the team on and obviously cares a lot for his team-mates, but he doesn’t need to say it out loud or on social networks."
Icardi has made no public comment about the standoff with Inter since complaining of a lack of "love and respect" on Instagram on 29 February.