Actually she shot it in the eye socket and got into the brain, their been a 9mm kill one year of a brown bear as well as a knife kill. Several with 10mm but a lot with the common 44 mag pistol here in Alaska. I have a neighbor a local baptist preacher while getting his moose out a Grizzly attacked him he put all 6 rounds of 44 mag into the mid section while under the bear. The Bear mauled him and he required several surgeries but survived and scared for life. The bear is on display full standing mount at the Fort Greeley Air Port Terminal with the six holes today. I could tell you a lot of bear stories living in Alaska good and bad.
As for holster the Diamond D chest holster is very popular here. I still have my old Bianchi hip leather holster and belt for both my SW 629 4” and G20.