Did something happen to William Utay, the person who has played Dr. Rolf before?
At one point they did have her maturing, making peace with John, being reasonable, etc.. Then poof - Sami was the old Sami again. I blame it on the lack of continuity between writing groups and/or the inability of the writers to come up with good story for a mature Samiand I realize Days has just done nothing to have the character grow up