Continuity mistake: In the episode where Gabby kisses Tom Scavo and, in return, Lynette kisses Carlos, Gabby is making a smoothie. When she's drinking it (as Lynette and Carlos are making out), it keeps switching from her left hand to her right hand, depending on which angle the camera is facing her.
You Could Drive a Person Crazy - S2-E2
Continuity mistake: When Bree is at the shop and people are waiting behind her mother-in-law, you can see how the first woman gets into the shop but you cannot see the man who came in, he just suddenly appears there.
Continuity mistake: When Mrs. McClusky originally comes to the door to tell Andrew about Bree being laid out on the lawn, the cover to the dial for the sprinkler system is open. In the next scene, when Andrew goes over to turn on the sprinklers, the cover is closed.
There Is No Other Way - S2-E16
Continuity mistake: When Susan reveals her feelings in the operating room, the face mask Dr Ron is wearing covers his nose and mouth in one shot, then not his nose in the next, then his nose and mouth again in the next. (00:38:30)
Color and Light (a.k.a. I Must Be Dreaming) - S2-E7
Continuity mistake: When Gaby goes outside to ask for help with her dress, you can see that the door is open when she leaves, but a couple of shots later the door is closed, despite Gaby not being near it.
My Heart Belongs To Daddy - S2-E4
Continuity mistake: When Mrs. Mulberry's umbrella is run over by the garbage truck, the position of the umbrella changes between shots.
My Heart Belongs To Daddy - S2-E4
Continuity mistake: When Susan is telling Bree and Gabrielle about Zach, Gabrielle's wine glass has a small amount of wine at the bottom, but in the next shot is almost half full.
Continuity mistake: When Lynette throws the dirty diaper, it hits the glass wall and falls next to the trash can, but when the camera turns to Nina, in the background, the diaper is no longer there.
Color and Light (a.k.a. I Must Be Dreaming) - S2-E7
Continuity mistake: When Julie finds out about Susan and Karl sleeping together, the tightness of Susan's dressing gown changes several times throughout the scene.
Continuity mistake: When Bree grabs the twin's toy keyboard, she grabs it and holds it at a downward angle. But in the immediate shot she is suddenly holding it at an upward angle.
Continuity mistake: When Lynette starts talking to Andrew, her car door suddenly goes from closed to open between shots.
My Heart Belongs To Daddy - S2-E4
Continuity mistake: When George is eating watermelon with Bree, the position the watermelon on his plate and the salt shaker on the table change between shots before George or Bree even touch them.
Continuity mistake: When Bree is at the restaurant by herself, she is wearing a ring around her neck on a chain which constantly moves position throughout the scene.
You Could Drive a Person Crazy - S2-E2
Continuity mistake: When Susan is screaming at Edie and she's going away, Susan's hands change position between shots.
Continuity mistake: Lynette goes to her second interview and has to take her daughter with her. When she is talking to Stu the receptionist he is eating a long sandwich. In the initial shots the sandwich is whole, but by the final cut away the sandwich has been cut in half lengthways, with the second half now on the desk in front of him.
Answer: Kayla was sent away in episode 16 (The Gun Song) in season 4, after falsely accusing Lynette of child abuse. She now lives with her grandparents - probably Nora's parents.
I'm curious why we never see her again, why she never talked about, and why Tom never mentions visiting her.