For a female, the Remington 870 in 20 gauge (not 12!) is pretty spot-on for home defense.
Guys like the larger 12 gauge, but the recoil is not female-friendly.
I’m 6’. Shoot a glock .40. Not afraid of recoil but want stopping power, reliability, reliability, reliability, and don’t want to shoot through intruder and 3 walls. Is that Rem 870 20 guage?
Bfl