Complex sentence: Tanya's daughter, Abi Branning (Lorna Fitzgerald), wants Rainie to stay, and Max agrees until she steals money from Max's sister, Carol Jackson's (Lindsey Coulson), purse and uses to buy crack cocaine.
Split into simpler sentences: Tanya's daughter Abi Branning (Lorna Fitzgerald) is keen for Rainie to stay, and Max agrees. She steals money out of Max's sister Carol Jackson's (Lindsey Coulson) purse, which she uses to buy crack cocaine.