Good morning, all. I am looking for recommendations for a good all around defense gun for my mother. She is recently widowed, but still quite spry at 71 years of age, and still looking to set out in her RV on her own. The interwebs are loaded with Top 5's of this and that, but thought I'd see if anyone had any good experiences with different calibers, frame sizes, and types (revolvers, etc.). I've also considered getting her a shotty for home and maybe something to carry when out and about. Thanks!