I am so sorry for your loss.  No, you do not have to sign these.  You have the same right as your sister to be appointed as the personal representative and you can request that a bond be in place in case some thing goes wrong. If you choose to sign the forms then you can request she waive her fee under the law. She gets paid.  I would have an attorney review all the documents before you sign anything. And you would get your share when the funds are distributed but the file is an open record you can review.  Good luck.