As Patch is a tortoiseshell, I think 'he' is a 'she' even if the name suggests otherwise. Poor girl. I hope she finds a home with someone young enough to outlive her.
I would have her but OH won't let me have a cat.
Can't you make some holes in some feed bags, roll some teeny bits of soil to look like mouse droppings. "we've got mice - we need a cat, it will live outside" (for now

)
BTW typing one handed, we took on a rescue cat last week, spitting image of a black and white in those photos, with an incredibly cute pink nose.