Land 7/12 and siblings legalities



My Father has 2 brother and all have property on their name and the 7/12 would be made in year 1996.
Can the sister of father stake claim in overall land of these brothers today as of now?
Is this even legally possible ? Because what i read is you can only claim for land only within 90 days after 7/12 is made.
Please help in providing legalities involved in this.