Ok, neither good, nor long, but,
The hero, as we recognise him immediately, starts off by being bitingly rude and funny to the stock awful dowager, but after that his wit fades and we don't see anything of it until the final scene when he is entranced by his affianced bride declaring war, when he calls her his absurd robin.
He has obviously been devastated by his mother's desertion and the shame that goes with it, and finds his similarity to her inconvenient to say the least.
But those interesting sidelights are never developed. So he starts off as a person and becomes pasteboard. He doesn't have anything to fight against, unlike his successor Adam, save being murdered ( I know...) so there is no sense of achievement either. We don't get feeling for him as an officer, either, unlike Adam.the characterisation is thin and inconsistent.
Drusilla, dreadful name, is a better bred slightly more intelligent Jenny. Her statement at the outset about the length of the sock is obviously supposed to be funny, but for me it fails. I do like her statement about why the Mrs Morville and Southey put their feet down about the Susqehanna expedition, as indeed Mrs S did, and I think the entrance to her mind is better than the coy equivalent in Arabella. A remarkable woman perhaps, like his aunt. But fundamentally boring, and pretty humourless.
I find the servants' badinage tedious, and Martin likewise, who will eventually turn into Richmond.
I think she can't decide whether Mr Clowne is a good egg or Mr Collins, his speech indicates the latter but he is presented more favourably in the beginning, once again poorly thought through characterization. ( she really doesn't get clergymen, even early 19c ones, save for patience's and Arabella's fathers.)
Theo is a slightly more developed version of Bernard.
The plotting has all the longueurs of a boring country house visit. in that, it is successful as Stanyon is undoubtedly a boring place save for the hunting fraternity. Pace is not a word I associate with this novel. But I feel she too was bored.
And I get bored too. Not quite so bored and irritated as with some of the others, and this is after all on the GH scale, which is more testing than most, but it is not the most gripping, through plot, character nor humour.