You don't know the details of the case but you're opining on it?
I am aware that Michael's sister-in-law claimed to be Terri's best friend. I am unaware of any evidence, other than her own-say-so, that she actually was. Do you know of any evidence to that effect?
Are you aware of any testimony saying that she wasn't?
Diane Meyer, one of Terri's life long friends, the one who testified that Terri was very upset in 1982 at a joke she made about Karen Ann Quinlan and quoted Terri as saying, "where there's life, there's hope," has claimed to be Terri's best friend.
This was mentioned by Scott Schaivo on WPHT 1210 AM Philadelphia. He made a sleazy attempt to refute Diane's claim.
BTW, because of threats they made to talk show host Glenn Beck and others and their poor behavior while on the air, Steve and Scott Schiavo were BANNED from the station.
Since Michael and Terri moved to Florida shortly after her parents and not long after they were married, and Joan Schiavo lives in Northeast Philadelphia, it is difficult to believe they would have had the opportuinity to develop a "best friendship," or one closer than that of Terri to her longtime childhood friends.