I've seen that cat around a few times, about 10 houses up the street. I haven't seen them near my house at all, which is good. Another cat was thinking of crawling under the gate the other day. They saw the dogs and took off. I've put some cat repellent granules around the gate. I'm not sure if it really works.
As far as our cat, she has reduced the nighttime howling quite a bit lately. Maybe it was a phase. The pet shop just dropped off a bag of the senior food I'm giving both cats. The bag says it now includes some sort of brain-health supplement. I'm guessing it's a bit late for that.