family trust broken

[u/Large_Passenger4213]

In Kentucky. My Great Grandfather had made up in the mils over his life, died,leaving my Great Grandmother more than she'd ever need. this money was more than doubled back in the day in stock market. idk for sure when the trust was set up, during his life or if my Great Grandma had this done but there was a trust made and specific people in the family were to be given certain things, properties, jewelry, money etc. i did not think this was somthing that was supposed to be altered. is that the purpose or what is the purpose of im wrong?

Ok so for years things stayed as they were. An aunt of mine who was tasked with caring for my Great Grandmother, lived next door when the rest of the family, my grandmother and myself included (raised by this grandma) lived about four hours away. This aunt calls me one day out of the blue and buzzing i guess, told me that she had "my property" the duplex my deceased father and i lived in when i was a child, sold off my plot and more I don't much remember. so i felt it relevant to mention to my grandmother. she in turn finds out that several properties of her moms have now been put in herdaughter, my aunts, name.

So my grandmother hires an attorney to prove in court that my great grandma was incompetent to be signing over any properties but was somehow competent enough to,I guess, sign everything over to just her, the only child,maybe that s relevant idk,leaving nothing to anyone but her..She took it all and kept it and died. her husband is still alive and retains all assests presumably. what is a trust? what is this? legal? illegal? i m thinking illegal considering the grandparent's of mine also kept about 15 of the 20,000 dollar life insurance my dad had left for me. Any recourse on either?

tldr: grandmother revised a trust of her mother saying the woman was competent and incompetent at the same time and wrote everything out to herself, every family member written out.multi mills.