3x16 - Melissa & Joey

Mel's sister, Meredith (Jaime Pressly), comes home from prison on furlough to celebrate Christmas with the kids and Mel, and seems unruffled by Joe's obvious animosity towards her. Note: this episode is a Christmas special and was only put in after EP15 because it was near Christmas. Episode 15 ends on a cliff hanger and is continued in episode 17.