Complex sentence: Ruth is shocked when her alcoholic father is admitted as a patient and reluctantly fakes a blood alcohol test so he will not be prosecuted for causing an accident but is devastated to realise he has manipulated her into this.
Split into simpler sentences: Ruth is shocked when her alcoholic father is admitted as a patient. She reluctantly fakes a blood alcohol test so he will not be prosecuted for causing an accident but is devastated to realise he has manipulated her into this.