Guardianship

How do I go about obtaining guardianship for an aunt who is 89 years old and has Alzheimer disease?
How do I go about obtaining guardianship for an aunt who is 89 years old and has Alzheimer disease? Would I become responsible for her bills?
What is needed for my son to give me guardianship of my grandchildren?
My son and his ex-girlfriend had been together for 16 years. They have three kids together. She walked out. She was using drugs and still is. She left behind, at the time, a 5 year old, 9 year old, and a year old baby. She has seen the kids maybe a total of 5 times. She is not allowed to take them, because of the life she is living. The boys don't want to see her. The baby which is going to be three in March doesn't know her. I am the grandmother of the kids, and I am raising them, and I have them in school. My son works nights, and I need to get guardianship of the kids to keep them in school here in the county where I live. He lives in Marion county, and I am in Hancock county. The kids go home on Friday night and stay until Sunday night, so they can have time with their dad. I need to know how to get guardianship. My son doesn't have a lot of money for a lawyer, but I can try and help.
What can happen if a foster parent gives the children to the parents?
If a Foster Parent gives the child to the Parent without the Courts knowledge and the Parent dies, may the Foster Parents exercise their guardianship rights as foster Parents.
How do you adopt a child that is not an adult?
Parent 1 and Parent 2 have raised Child A for 12 years. Child A is now 18 years old, and wants Parent 1 and Parent 2 to adopt him/her. How do Parent 1 and Parent 2 adopt Child A as an adult?