Welcome to you and the adorable Pippin! How wonderful, to be starting a journey with such an adorable companion. I hope you have many, MANY happy years with him!
After hearing that you had contacted the owners with no response, every tiny hesitation I had about your taking him with you was utterly gone. That's animal abandonment, and is illegal in some places (those laws vary WILDLY). He is yours, and officially yours. Y'all enjoy each other!
Oh, my darlin, you have done far more than you can know. Because of you, she knows hearth, home, and family. And you allowed her to set her own boundaries on that. And yes, they live, and so often die, by their own rules. But she will die knowing that she was Somebody's Cat, and that, I...
So long as you have the wherewithal to afford double medical expenses (shots, annual checkups, etc), two kittens keep each other company and amused. Do they by any chance have another kitten from her litter? That would be ideal.
One of my realtor friends agrees with your brother. His advice, "Buy the worst house in the best neighborhood that you can afford, and renovate. You can get up to 3 times what you spend in increased value."
Taquitos for lunch. Dinner will be a hamburger steak and some sort of veggies, two of them, unless I'm absolutely flattened by then, in which case, it will be just a hamburger, no sides at all.
Thankfully, litterboxes are not (yet) an issue. I have an adjustable-height office chair that is just right for sitting in and cleaning a box! But the spraying...nope. Can't get down on my knees to properly clean...or, I could, but I couldn't get back up again! And the three of them DO need...
Rest you gentle, Bellatrix LeGray, dream you deep. Your pawprints are on someone's heart forever.
Seventeen years is remarkable, and a testament to your loving care...but where there is love, an eternity is not long enough. Now, from her new home in That Place Where All Things Are Known, she...
Also, consider Revolution Plus, which also protects against heartworms. They can attack cats, and there is no treatment, only prevention. Will NOT take care of the tapeworms, but you're still one-up, and can add one of the ones that @StefanZ suggested.
Have you discussed having the overhanging limbs trimmed at your expense? That might work. And if there are branches over your actual garage, you might have some legal grounds, as it poses a danger to your property.