It's been mentioned a couple of times, but I'll mention it again. The SIG P238 (a .380ACP) may be almost perfect. It is very pleasant to shoot, very accurate, comes standard with excellent night sights, has the easiest slide to rack on the planet, good single action trigger, and it has a safety which you want. Even better, it can be loaded, unloaded, and cleared with the safety on which significantly reduces the risk of an accidental discharge. My wife has this one:
She loves it. Likes to shoot it with her 70 year old hands. Has no problem with the manual of arms or clearing jams (practice jams only, it's never doen anything wrong on the range). It eats everything we feed it including reloads and comes back for more. She traded her Ruger LCR "revolver" in on it. For my wife, it's perfect. I reload .380, 9mm, etc. so I make her all the practice ammo she wants.
So why did I say "almost" perfect? You want a 9mm. It's a .380. Maybe the best one on the planet but since the Colt Mustang is identical to it, it almost has to be a tie.
If you can wait, SIG is coming out with a new model, the P938 which is a 9mm version of the P238 but dimensionally the same other than the slide being about half an inch longer (which doesn't matter). The P938 as advertised meets all your requirements.
You still have to like the feel of it, but on paper it was designed for you.
Between now and then, you may like the Gen 4 Glock 26. You will just have to try it to find out.