Alexis has been criticised for his body language at times this season.
But Reine-Adelaide told the Daily Star: “He's very good and working hard.
“He's a great character and we expect that. All the players like him. As a player we can all watch him and get better."
He added: “Coquelin, because he's a French player, is always talking to me.
“Welbeck as well talks to me a lot.
“They're all nice to me because obviously I'm one of the youngest."