If you can learn how to do simple straight line stitch on a sewing machine and get say fabric from a second hand store or discount store then a nice colorful screen made from fabric (with some kind of plastic on top if it rains a lot ) & pipe to block views say 4 sided ( top , rear, sides) so you have a sort of out door nook to sit in and smoke, read , make out with your wife or what ever with her view being blocked. As far as she goes its sad that she is directing her anger at others, providing care to someone who is almost totally dependent on someone else for every thing from toileting to showering , other grooming, changing clothes, laundry , housekeeping, meds , cooking, shopping , medical appointments and more often than not help is rare or even getting a few hours of time away might be nearly impossible and some times there is no money to even pay for a third party to come in just to give some badly needed time off. I do know what that is like, back in the early 80s when hospice care was in its infancy and very discriminatory I took care of someone with mobility issues , who needed assistance with the most basic of cares including showering changing his stoma bag especially when it leaked , dressing, undressing and I still had to work full time So my point is , do your best to give your self some privacy while in your yard , when she drives in a dangerous way call the police , and to the rest do your best to ignore her.