I've never handled a Shield, but most semiautos have an external slide stop release lever that can be used to chamber a round while closing the slide. They can also be slingshotted closed. Both ways work. I doubt the Shield is different.
Some instructors insist you use the slingshot method, as that ensures the slide executes a full back-to-front travel, which theoretically ensures reliable feeding of the top round in the magazine. However, external slide stop release levers are designed to be used. It's a matter of your preference as to which method to adopt, assuming your gun offers both options.
I think you'll find the TCP has a slide stop release, so either method can be used. Very few guns with slides that lock back after the last round do not have an external slide stop release.
Regarding a good woman-friendly semiauto, I think the best forum for the newly or about-to-be armed female is The Cornered Cat:
http://www.corneredcat.com/.
I think the proprietor is a moderator here. When I had a frozen shoulder that made it seemingly impossible for me to rack a slide, I found a girly method on that site that worked, despite the debilitating pain experienced using a manly technique.
When it comes to choosing a friendly gun, consider the following:
- The heavier the gun the more pleasureable and accurate it is to shoot, but the harder it is to carry.
- The more work harnessed by the recoil, the more recoil energy is absorbed, which means less is avalable to effect you (eg, a tilt-barrel recoil-operated action does more work than a blowback-operated one; recoil-operated pistols are also easier to rack.)
- The more secure the grip, the easier it is to shoot, but a big, comfy grip is harder to conceal.
You may want to check out the EAA (Tanfoglio) Pavona. It comes chambered in either 9 Luger or .380 Auto (9 Short). It was designed specifically for women. The Beretta PX4 Storm Compact is bigger than a Shield, but it's barrel rotates during recoil, which reportedly makes it a soft shooter. It comes in a Sub-Compact version that has the traditional tilt-barrel recoil operation.
A good website for window shopping and comparing is
http://www.genitron.com/. It gives size specifications and free recoil energy estimates.