Is there a restraining order in effect against you? What is the reason your sister gives for not allowing you to see your father? Is he able to make decisions for himself or is she his legal guardian? All these questions play a part in your situation. She can keep you from coming to her home, as that is private property and within her control. Denying you the right to see your parent, however is not necessarily within her power to decide. You should consult a Family or Elder law attorney. There are many who offer free consultations and will give you an idea of what your options may be. Good luck.
If the father has visitation rights and the mother refuses to allow the father those rights, then the father can sue the mother in a civil contempt proceeding. If she doesn't have a good reason for disallowing the visitation then she can be held in contempt of court. There are various remedies including giving the father more visitation to make up for the visitation that was disallowed by the mother or even giving the father custody, but usually, the judge will just order the mother to allow the visits. His paying or not paying child support has nothing to do with whether or not he gets visitation (i.e. he gets visitation regardless of whether or not he is current with child support).
I don't believe so.
No, a stepfather will not have visitation rights to his stepson after a divorce. The mother can always allow the stepfather to visit if she wants.
He essentially give up everything. The child is no longer his legally. He has no responsibilities toward the child and has no visitation rights.
Once the father's paternity has been established in court she has to be able to prove he is unfit or the court will allow him his rights. If she refuses even though there is a visitation order she would be in contempt of a court order and could eventually lose custody if she continues to interfere with his visits.
If there's a court order, than yes.
As many rights as the mother wishes to allow until the father protects himself with court ordered visitation and decision making rights. In some states, the father may have certain intrinsic rights, but you would need to provide where you reside and the state (or country if outside the USA) where the child legally resides.
He doesn't. Only the courts can award/enforce visitation.
You can go back to court and request that the visitation order be modified to better suit the situation and allow the children time with their father.
Many states allow stepparent visitation rights
yes he can, provided they have filed a settlement agreement with the court in the county in which you live which gives your father rights of visitation or parenting time. If your mom does not allow your father to exercise his rights of visitation with you, she can be held in contempt of court for witholding you from him. If you do not wish to spend time with your father, it's best to explain to him why and usually you can work out a reasonable 'break time' until you want to spend time with him again.
Yes, if the parents of the child (your sister and the father) allow it.