She glanced up, and for a brief moment(,) she thought she saw Mittens scurry past her with a candle in his mouth. She wasn’t sure though because she was beginning to question her own sanity. (3)The weirdest things are happening. When I got home from work(,) the other day(,) Mittens was waiting for me at the top of the stairs, which were a little cluttered with his toys. (2)Nothing. The door was closed. She was alone. Lois took a breath a nice, deep breath and counted to ten to calm herself. With a little laugh(,) she shook her head and opened the door. (3)Lois mesmerized by the little mouse was unable to pull herself from its gaze. Something flashed beside her. What the..?! Mittens(,) whose eyes were red(,) with terror let out a bloodcurdling screech and launched himself at her.

Numbers at the end indicate the number of commas to add to the sentence. I added some but can't find them all. If I could get feedback. The commas with the parenthesis are user added.