What Rights do I have as family member/daughter to see father's Will?

Is there any Minnesota case law that states a family member has a right to view a Will. My father died two weeks ago and my estranged siblings [co-representatives to father’s Will and POA’s to mother] refuse to show me the Will; yet everyone in my family including grandchildren have read the Will. I had many conversations with my father over the years and he told me that he was placing certain property in a trust for all six children so it could never be sold. I believe that my mother is a vulnerable adult; she has NO short term memory what-so-ever, and the POA’s are using this to their advantage. I contacted local social services, but they don’t believe that she has been financially exploited [yet.] My Mom will sign anything put in front of her. I am number 4 our of 6 children and estranged from family due to older brother ual abuse and prominent alcoholism amongst family. I was advocate for Mom but my siblings moved her out of her home and into their Wisconsin homes. Seven days ago my Mom was telling me how much she loved me and we scheduled a lunch date and today I finally got a hold of her but she told me that she never wants to see me again and hangs up on me before I can say anything. Siblings never contacted me for the “reading of the Will” and their lawyer says he needs permission to show it to me. I am worried that anger and revenge have taken hold and I could be written out of the Trusts that my father set up in his Will. My parents had individual Wills leaving each other their joint property. My Mom has not been declared incompetent, as siblings don’t want to do that because as POA’s they claim to be making decisions jointly with her. She may remember what she is signing one second, but only minutes later will completely forget what she just did. If the Trusts are “revocable” can the POA’s change my Mom’s Will and disinherit me? I know about conservatorship and guardianship but that will cost thousands that I don’t have. Should I sue to see the Will? Help. THANK YOU!