
Max F. answered 05/05/19
MBE SPECIALIST - MD & FL Young Attorney - 2x Bar Passer (2018/19)
There are a multitude of issues here. First and foremost, this question is testing professional responsibility.
If this were in a General Bar Exam (not a state specific portion) we would be referencing the Professional Rules of Conduct.
I would love to explore this issue in depth with you; however, for the purposes of this answer I will point out that it is not proper for an attorney to represent a party in litigation that the attorney is likely to be a material witness in. Here, the question states the attorney believes that the client was fully competent at all times and will so testify, if called as a witness. Additionally, the attorney was a witness to the will.
As such, the issue to be discussed would be the attorney's likelihood of becoming a material witness in the case as a conflict to representing a party in probate litigation.