outtolunch

Your sister's actions betray her words. Your sister is addicted to an opiate, heroin or pills. She may or may not be in a Methodone Maintenance Program. If she is, she likely has branched out to other substances. It really does not matter. Addiction is addiction.

Trust your gut about your sister's children. Addicts are not competent to parent. Seriously consider calling CPS to investigate and then step back.

You have no more control over your mother's behavior and choices than you do over your sister. Please give serious consideration to acting upon your feelings and be done with the situation and the never ending drama which is highly addictive unto itself for all parties.

There is a tendency in all of us to focus too much time and attention on other people's problems and neglect taking care of ourselves in the process. You may want to determine if there are any Alanon meetings in your area for an opportunity to learn more about managing your reactions to a family situation beyond your control.