This must be expressed to a family court judge which requires a parent to file a motion to modify custody. Texas is one of only two states that clearly give you a choice. However, the drawback is that by the time of the hearing, you will be 18. To expedite the procedure, if the parents are cooperative, this can be achieved through the use of a Certified Mediator, than filing the document Pro Se with the court. See link below.
What rights are you talking about? Are they parents? To give the 19yo custody or terminate the 15yo parental rights you have to go to court to do so. The 19yo have to petition for custody.
An eighteen year old is an adult and can live wherever he or she chooses. A custody order has no bearing on this.
Yes, only the 16-year-old would need parental consent to marry. If both parents of the minor have legal custody, then both must agree to the marriage.
see links
Yes. * If you were legally married you are considered legally emancipated and are no longer in the custody of your parents, therefore you may move from the parental residence at any time you so choose.
Not even if he did have parental rights. Children can have an opinion, but not a right to choose. see link below
It's a sign of parental alienation syndromesee links
no
If you choose to let her.
No they can not choose until they are 18.
No. He can not choose where to live until he is 18.
No, as it's a sign of parental alienation syndrome. see link