My 13 yo lost her dad feb1..the family said "no Will" just found out there is one.now what?

HER FAMILY WAS TRYING TO HIDE THE WILL..THERE IS PROPERTY AND MONEY AT STAKE..I AM HER LEGAL PARENT..HOW DO I GO ABOUT THIS..GET AN ATTORNEY? THEY WON,T SHARE ANY INFO ABOUT THIS...CAN HER UNCLE GET TO B BENEFICIARY.