Mo returns to Walford, telling Stacey that Kat has died. Stacey raises money for Kat's funeral, but Jean arrives and tells Stacey that Kat is not dead as she spoke to her that day; Mo has lied to raise money as she has financial problems. Kat returns to Walford and is confused that The Queen Vic is holding a benefit night for her and confronts Mo, but hides when Ian brings the raised money. After Ian leaves, Kat reveals that she and Alfie are taking a break from their marriage and he is in Spain with their children running a bar with a Russian partner after their old bar lost a fortune. Kat, Stacey and Mo arrive at The Queen Vic when Mick is giving a speech about Kat and attempt to maintain that Mo made a mistake, but she starts a fight with Karen Taylor (Lorraine Stanley), which starts a bar fight. Jean pays off Mo's debt, and Kat starts a cleaning business to pay Jean back. Kat is furious when she finds Hayley in Walford. She demands that Hayley leave, but Hayley threatens to reveal what has happened in Spain. It becomes clear to the Slaters that Kat is hiding something and it is revealed that Kat has had an affair and was not watching when one of the children burnt themselves, leading to Alfie kicking her out. Kat does not know that soon after this incident, Alfie and Hayley had a one-night stand, which has resulted in Hayley becoming pregnant with his child. After Hayley tells Alfie, who is staying in London, about the pregnancy, he tries to persuade Hayley to terminate the pregnancy and returns to Spain, but Hayley decides to keep the baby.