I enjoyed the dark and emotional relationship between the main character and her mother. It was horrific at times, far from ideal and you do feel genuinely sorry for her. At times an (acceptable) struggle to read. The balance between disliking her mother and acknowledging her responsibility of looking after her is portrayed so well. It really encapsulates how painful and stressful it is to look after a parent in need, but the added layer of their difficult relationship is what makes this such a worthwhile read. You feel every pang of hatred and betrayal.
I listened on audiobook, and although it was well read I did need to re-listen at times. I think this was more to do with the irregular pace and succinctness of the writing, I kept missing important elements among less important parts of the plot, otherwise would have been 4*.