Final answer:
The issue described seems to pertain to an excess of affection that does not respect personal boundaries, making 'Lack of boundaries' the most suitable answer.
Step-by-step explanation:
The problem described suggests there is too much love for the daughter and niece, indicating excess affection or involvement that may not respect personal boundaries or individual autonomy. The most appropriate answer would be 1) Lack of boundaries. Boundaries are essential in any relationship as they dictate what is appropriate and what is not. They help to ensure that relationships are respectful and do not impinge on either party's personal space or comfort. Excessive love, when not channeled appropriately, can result in overstepping boundaries, which may cause discomfort or lead to unhealthy dynamics within the family.