I am so sorry for your loss and for the problems that have resulted.  I think that ultimately you will ned to seek help from an attorney.  There is a time frame for centesting a Will but it has to do with notification of the intent to probate.  If you were not notified and you should have been then you may be able to do so now.  You have to have "standing" to contest a Will and I believe that you as a daughter do indeed.  Now, you can view the Will - it is a public record once filed- so you should go and get a copy of the probate file and take it to an attorney to review. Good luck.