Imagine you are a manager of a non-unionized company and you have an employee who has been with the company for 15 years working in the same position. She has seniority over 60% of your staff. Historically, she has been an excellent employee. The problem is she seems to have lost interest in her job, she does not take her job seriously and she is constantly arriving late and leaving early. You asked if there are any personal issues that might explain for her late arrivals and she (honestly) responded that there are no personal issues. Recently, she has been a negative influence on some of the junior staff and has recently been reluctant in training new staff, a skill that previously she was quite good at. You have determined that letting her go is not currently the best option as you are determined to try to change things and attempt to improve her work ethic and attitude. How will you approach and solve this??