Christina Applegate’s daughter, Sadie Grace LeNoble, had a hilarious message waiting for her mom following the actress’ return home from a four-month hospital stay. “You’re home. Happy day, ho,” Sadie, 15, arranged on a garland to welcome her mom home, which Applegate, 54, shared on Instagram Monday. “[I] meant to post this a while ago. My kid is so my kid hahaha,” the Golden Globe winner, who was discharged from the hospital in early August, captioned the post. Applegate shares her look-alike daughter, Sadie, with her husband, musician Martyn LeNoble. The “Dead to Me” actress, who went public with her multiple sclerosis (MS) diagnosis…