If those were the words used, they did not say that the MS was the cause of death. It definitely could have been made more clear, but in the article, it said that she had severe infections that were the cause of her hospitalization.
There is also a coroner's inquiry underway which tells me that there is more to the story than was disclosed at the time of airing the piece.
What we don't know is almost as compelling as what is known, it's definitely sensationalism, but, the business is driven by ratings, not integrity.