It would depend on when the Will was executed and the state of mind of the individual at the time the Will was executed.
Legal disclaimer: Mr. Tabaku may be reached at (240) 750-4663 or email@example.com. Mr. Tabaku is an attorney licensed in the state of Maryland. This answer is for general information only based upon the facts stated in the question and does not create an attorney client relationship between Mr. Tabaku or Tabaku Law Firm, LLC and any person. You should schedule a consultation with an attorney to discuss the specifics of your legal issues.
You have a limited time to contest a Will, in Maryland. You must engage counsel to review the Estate documents with you, and discuss the basis for your assertions of undue influence. There are specific facts that must be proven, and it may take more time and money than you are willing to spend. We have had several cases like this.