Hi Elizabeth and welcome. G30 Gen4 would be just about perfect. The Gen4 design of this small easy-to-shoot package combines a shorter trigger reach with a great magazine capacity. Cheers, stay safe and enjoy!

Between the 2 the glock 30 will conceal much easier. The glock 21 is a excellent choice for police duty and or home defense. I own both

If you're familiar with the .45 ACP round and can handle the recoil then go with the G30 for carry. My friend has the Glock 30S and loves it. He's a medium sized fellow and this model suits him well. Also, the Glock 30s holds 10 rounds of .45 in the magazine giving you 10+1 of .45ACP, just in case.