
We have moved with unseemly haste to get another cat, because Monty is basically still a giant kitten despite being almost 6 years old, and Marlene is not an energetic cat and never like Monty much anyway. The hope is that by bringing in another active cat, that will keep Monty from harassing Marlene.
Isla is a little over a year old and comes from the Cat Adoption Team, where her listing caught my eye because it mentioned that she was more motivated by play than food. She is certainly a very active cat. She was initially quarantined in the usual room we use, but which is also now where my work-from-home nook is. Having a human to hang out with most of the day has definitely accelerated her getting comfortable in the house, although not the pace of getting comfortable with the other cats.
Marlene is not happy with this development, though with time and reassurance she has at least accepted that the new resident is a fact of life. Monty completely skipped the step about being suspicious of the new cat and went straight to trying to get through the door to play with her within an hour of us bringing Isla home. He has by now figured out that she's a bit intimidated by him yet, and is currently spending a lot of time sitting near her and occasionally rolling around at her in the hope that she'll get the idea.
We don't know much of Isla's history other than what's in her medical record: spayed last December by a program out in eastern Washington that mostly works with stray and feral cats, then some time in a shelter in Pendleton, then a transfer to CAT. She didn't want to eat much in a shelter setting, so CAT had her in a foster home, which meant we got to see her and chat with her fosterer by Zoom before setting up the logistics of the adoption.