Had dog walker for around 5 years and am fond of her. But have had some doubts of late. Couple of incidents with dog bites in the pack which she has not dealt with firmly enough, has always turned up late in the mornings, another client said she has left several dogs in her small flat when dog sitting and had gone out for the evening, my dog sometimes appears reluctant to go with her now. She is anxious and prickly about criticism. Had her dog walker friend a couple of times and she appears fantastic. Thoughts?