Partition Suit

F grandfather has a self acquired property. He has shop and house.after his death his wife made a will in favour of three sons namely roshan sahil and raj. Now roshan lal , sahil and raj has there own childrens. roshan has two sons and one married daughter name priya. after marriage she did not no what happen and how property disributed. she gets jama-bandi and her name is not there. instead of this roshan lal, sahil and Raj has a share in property and roshan lal wife ,sahil wife and raj wife also has share. now roshan lal both sons got share according to jama-bandi but daughter name priya is not mention. one of the son of roshan lal i.e ajay file a partition suit against his uncle sahil and raj(chacha) . my question is Is priya can file suit for partition suit against brother ajay? Is coparcenary is establish in this case ? Is grandmother can made a will? can priya claim share as her father is still alive.?