It seems like there's a bit of a complex situation unfolding here. It's important to remember that workplace relationships can be tricky, especially when they involve the child of a supervisor. Here are a few suggestions:

1. Maintain professionalism: Always keep your interactions in a professional and respectful manner. Avoid any behavior that could be misconstrued as inappropriate or favoritism.2. Be direct but kind: If she expresses her feelings, it's important to be honest but considerate in your response. You might say something like, I appreciate your interest, but it's not appropriate for us to pursue a relationship given our work dynamic.3. Respect boundaries: If she's visiting her mother at work to see you, it might be best to limit your interactions during work hours. This could help prevent any potential misunderstandings or uncomfortable situations.4. Discuss with your manager: If her visits are becoming a distraction or are causing discomfort, consider discussing the situation with your manager. They can help set boundaries or arrange for her to visit at a different time.5. Be understanding: She may be feeling confused or frustrated. Try to be understanding and compassionate in your interactions, but also firm about maintaining professional boundaries.