I think there was a friend who was going to testify to just that, the MS had abused Terri before and that she was getting ready to divorce him, but the way they tied Terri's care in with the lawsuit, that the money would go to her for care, the lawyer didn't want her to bring that up. They said it would only hurt Terri's chances for the best treatment.
The exaggeration of the words of her co-worker and friend, Jackie Rhodes, who gave this testimony at the 2000 trial:
terrisfight.org
She is often quoted as saying things such as, she was "worried about her going home that night" "begged her not to go home" "come over so you will be safe". But she did not say that in her testimony, even with leading questions and, as pointed out in cross exam, having embellished her story significantly since her deposition 2 weeks before. She went from saying Terri and Michael were trying to have a baby, to saying Terri and she were talking about divorce and getting an apartment together.