This is really a review of the entire Mitford series which I have re-read too many times to count.
If you're looking for gentle wit, a bit a sarcasm, likeable characters, lovable dogs (a few cats), great storylines including some nice love stories, as well as great spiritual messages without it becoming preachy, you will love reading about Mitford and Father Tim.
Although Ms. Karon handles some pretty serious issues such as alcholism, depresssion, and child abuse, it's done without rubbing the reader's nose in it. There's no bad language, the strongest exclamation being "blast!". Her books are G rated when it comes to sex. It's clear when the characters are physically attracted to each other but you don't follow them into the bedroom.
As the characters are developed over the course of the series, the books get better and better. In fact, when I first read the last two in the series, I immediately went back to the beginning and read them again because they were so good! :-) I don't think I've ever done that before.
And, of course important for me, her books have happy endings.