In the present, Mrs Munro gradually becomes dissatisfied with caring for Holmes as his overall health deteriorates, especially after he becomes unconscious from an experiment with the prickly ash and requires more physical care.
In the present, Mrs Munro gradually becomes dissatisfied with her work, as his overall health deteriorates and he spends more time with her son. After he becomes unconscious from an experiment with the prickly ash, he requires more physical care.