Yates, 37, was sentenced
last month to life imprisonment after jurors rejected her
insanity plea and found her guilty of murdering her five
children in the bathtub last June.
The two-page letter was delivered to
Rosenthal's office by Yates' mother, Karin Kennedy, and her
older brothers, Brian and Andrew Kennedy.
Saeed did not return a phone call seeking
Yates was admitted to Devereux in April
2001 for 10 days and again in May for another 10-day stay.
Saeed testified at the trial that he
found no evidence Yates was psychotic when he saw her two days
before she drowned the children. He testified that he was
removed as an administrator at Devereux after the drownings
but still sees patients there.
Rosenthal also declined to comment. He
said two weeks ago that he was investigating whether other
people were "criminally culpable" in the deaths of the Yates
Speculation has been rampant in Houston
since the verdict that others could be held responsible for
events that led to the deaths, including Yates' husband,
But Rosenthal said, "Unless and until
credible evidence ... is brought to my attention, no charges
will be brought against him."
Former Harris County prosecutor Joe
Porter said Wednesday that "it would be a stretch" for
criminal charges to be filed against Saeed.
"Does it rise to a level of criminal
negligence? That would be very, very difficult," Porter
Usually, issues over the quality of
medical treatment are addressed in civil lawsuits. But Yates'
family said they do not intend to sue. "It's not about money,"
Brian Kennedy said.