Do my milk-sisters have a right to maintaining ties and visiting?

Question:
Honorable Shaykh, may Allah grant you success, I have milk-sisters, but since their childhood they do not come out to greet me, nor do I meet them. However, I visit their mother, who is my milk-mother. His question is: Do my milk-sisters have a right to maintaining ties and visiting? And if I do not visit them, am I severing the family tie?

Answer:
No, a milk-kinship is not a blood kinship, and it does not entail the obligation of maintaining ties or providing financial maintenance. It only establishes the status of being a mahram (a relative one may not marry). Milk-kinship only establishes the status of being a mahram. Yes.