Not certain about the 60/3” specifically, but I really love me Blackhawk sort or SERPA holsters. Can be belt worn or paddle, I prefer the paddle for easy on/off. Grandma may need a good belt though.
The sport me del is friction retention and can require a bit of sturdiness regarding belt/ holster and body interface, while the SERPA while having a friction adjustment, can be tuned to rely solely on the release lock. A simple press with shooting index finger releases the weapon and easy draw from there. Both can be tilted fire/aft to accommodate pretty much all preferences. Can be adjusted for belts from 1” to 2”.
Not expensive but we’ll worth the $30-65.
Watch out for those kitchen mice, I hear that they charge when wounded or cornered... .
Thank you, sir knight.