By Olivia Wheeler Coronation Street has revealed one character’s exit storyline next week as a Weatherfield resident looks to leave the cobbles. In upcoming scenes, Cassandra “Cassie” Plummer calls in the shop and tells mother Evelyn Plummer that she’s donated Terry’s money to a dog charity and that she only attacked him to stop him from hurting the dogs. Also in the shop, Tyrone Dobbs tells Evelyn that wife Fiz is attending a course in Italy and has invited him to go with her, but he wouldn’t dare to leave the girls with Cassie for a fortnight. Later in the week, Cassie applies nail extension…