My bother just got appointed administrator of our dads estate. My sister lives in dads house..not payin the bills , trashing it can he kick her out

As the Administrator, he has full power to remove her from the house and to sell the house.  But, as Administrator (I assume this is a dependent administrator) he can do so only with court authority and approval, which requires a motion or motions to be filed requesting such authority.  Good luck! Sincerely, Kevin Spencer  www.spencerlawpc.com