Anya's arc in S7 suffered from the writer's focus on the main arc and not having enough time to cover everything they needed to. (Personally, I think if they limited Tom Lenk to two episodes or did away with his character after Never Leave Me - this problem could have been averted. We really didn't need Storyteller. But that's just me. There are quite a few people who adored him.)
And well, personal preferences aside, they had too many characters in S7 - due to the whole potential slayer plot arc which was admittedly integral to the plot.

So, they did the whole thousand year demon bit in the space of four-five episodes. After she gave up being a demon, Anya reverted to well comic relief.
There were some good bits and pieces in there - Anya's interactions with Spike, which resolved their hook-up in Entropy as being little more than a drunken misstep on Spike's part or a way to assuage the pain, but not all that satisfying. And on Anya's part - a way to kick Xander for being an ass or make him jealous, as well as a means of assuaging pain.

So, I think Anya did sort of recover - but like Wes, she dies at the end.
In Buffy - she's the only lead character that is killed. (Mainly for Doylist reasons - the actress was fighting with Fox and wanted to be killed off. Whedon needed to kill off the character and let her have her wish. At this point, there was a possibility of a spin-off. Many of the characters Whedon has killed off - oddly, were for that reason.) So neither recovered completely. Angel does however forgive Wes, just as Buffy forgives Anya.
However, Wes' recovery is kicked to the curb by Angel's devil's bargain with WRH, where he succeeds in conning poor Wes again - and when Wes unravels the con - it destroys him and his world. Wes dies at the end of Angel in part because of what Angel did in Home.

So, doesn't end well for Wes.