As a person who has watched all the available Seasons of CSI Las Vegas, CSI Miami, CSI New York, NCIS, and NCIS Los Angeles, I completely reject the verdict of "suicide" until I have seen the forensics data with my own eyes.

As a Pathology Laboratory Assistant staff of 30 years standing, I know that a HIV Positive result means much less than what the layman think it does.
In the lab, incredible stuff goes down. Samples can get switched. The reagents expire and give false positive. The Control Specimen may be wrong.

As a Policeman, I would presume Murder, and suspect that she was killed by a layman, who made it look like a suicide.
A lover who finds that they may have been compromised by their partner's carelessness has motive.

What Handwriting Expert verified the suicide note?
Was it analyzed for stress, suggesting that it was written under threat of death or harm.
Was it analyzed for forgery? Was the vicinity swept for draft copies. (If you were writing a suicide note, would you get it right the first time?)

There was this beautiful BBC Radio Medical Hospital Drama, WESTWAYS, where one of the doctors- Joy Onuokwe (the Black one, of course!) got exposed by a needle-jab, and turned up HIV-Positive. She did not commit suicide, and merely took precautions to avoid infecting others. This reflects what happens around the World.

The World-Famous "MARLBORO MAN" was a male homosexual, and became infected through sexual contact- the most stigmatized means of infection- and spent his days going around lecturing youngsters, trying to convince them to do positive (no pun intended) things with their lives, so that they did not end up as he was going to. There was this brave young lad in South Africa, who was infected as a child- who did pretty much the same thing for a number of years while HIV-positive.

When the disease SARS was recently considered an automatic Death-Sentence, a Doctor Garth Brooks, I believe his name was (I heard about it on THE POWERHOUR, on WHRI- that is Shortwave, and not always very clear,) contracted it from his patient, so that they were both dying. He did not give up, even though everyone said that he was going to die, because no antibiotic was effective.

He found out that juice extracted from Oregano and "Yellow Onions" and Garlic cures SARS- for very little cost.
The patients vomit greenish-yellow pus, and recover. He was talking about this on the radio, because the American Medical Establishment covers up this and other such effective remedies that are not in the Medical Textbooks (which they wrote).

AIDS has been successfully cured, but the cures were buried- sometimes with the persons who found them. (Assassination.)
There has been a rumour that there was a Native Doctror called "Abakalaka" in this country, who cured AIDS- then was lured to America, and then murdered.
I tried to find out the details on the Internet once, a few years ago, but what I found at that time was that Abakalaka was not the name of a guy, but an HIV-Management Organization in Malawi, or somewhere. (Maybe someone else here has better information? This could even have been faked!)

I believe from the evidence before me, that the doctor was murdered by a person ignorant of the Scientific realities of HIV-Positivity, and this may be the clue to catching them.

After months of pestering, my Computer Hardware "Customer" finally brought me a 1KW Inverter.
All the way from Mumbai, he brought that sucker for me, and me alone. (He brought other stuff, too.)

The Inverter delivers 1,000W of quiet electricity from a sufficiently powerful DC Source above 10.5V.
However, this model does not charge the batteries you connect it to.

Therefore, when the car battery I had bought earlier for experimental purposes became useless immediately.
(Car batteries can be used if you really have to, but are not suitable for Inverter use,
because they cannot be quickly recharged without damage. Therefore you need something called a "Deep-Cycle" Battery.
Nobody could articulate what this meant, nor why regular batteries should not be used- I had to spend N10,000 to find out.)

The Inverter itself has sat on my workshop table for the past year. Completely worthless.
You have to be very careful to get the right information about what you are trying to buy, or you can get the wrong things.