Just want to know what leg I have to stand on. My youngest sister has a 7 year old girl who her father has full custody of children since separation. I don't know what the go is between her and the father, but as far as I'm aware my sister is allowed to have her daughter on a fortnightly basis. She hadn't had her since last August as the father makes up reasons why my niece is unable to come. I haven't seen her since her birthday I miss her and want to see her as so does her brothers and sister and the rest of the family I missed her father asking how was she going and he blocked me I also text him and asked and said I had a right to No and he hasn't replied or nothing. I am wanting to know how I would go about seeing her?