Greetings and welcome to the forum.
Perhaps some simple "window shopping" would be a better route. Go to several gun shops and/or ranges and get your hands on as many as you can in the caliber(s) you are interested in investigating. You'll be able to tell pretty quick which ones fit and feel best to you. If there is a similar/same model in the caliber you want versus what you felt, it usually doesn't change the exterior dimensions much if at all (for information/decision making purposes).
Trigger reach is a hard one to speculate on as everybodies hands and fingers are different and how they line up based on the way YOU grip the handgun makes a big difference. I will not recommend a particular make or model because of this very set of variables. It really is something you have to investigate and determine on your own. Keep in mind, if you find something that is REALLY close, there may be aftermarket grips that could make a difference. Generally not in the size catagory as you've stated your hands are on the small side. But rather in the material or texture areas that could provide a better feel and grip for you.
This is actually one of the more fun parts of handgun purchases, IMO. Shooting is obviously one of the better and doing so with friends in a slightly competetive manner is even better. Good luck and post an update.