Dear Karina Lake:

It is your right, your legal and ethical right, to cut contact with any family member (other than your minor children). If a relationship with your sister harms your mental health, as a woman and a mother (and so harms your children), then absolutely, cut all contact with her.

Reads to me that your sister is suffering the consequences of having been mistreated as a child (and still, by your/her father, I understand). I wish she attended competent psychotherapy, to heal herself and do a better job as a mother.

anita