Don't think they ever had sex but I hope so. Do know she said that after being spanked they'd go to bed. At least the bedroom and close, lock, the door.
hard to say much more without knowing more about you all
ie how old you both are and the age difference of the aunt and uncle between yourselves
but if it was me id have a word with her uncle on the quiet and confide in him that you and your wife are having marital problems and she is misbehaving and your at the end of your rope and dont know what to do with her
tell him shes always spoke highly of him and respects him and credits him for keeping her on the straight and narrow in her younger days
and does he have any advise for you or could he intervene on your behalf to correct her behavior
joke that maybe your fighting a losing battle with her and maybe someone else would be able to step in and control her naughty behavior and put her back on the path he set her on
im sure hell jump at the chance to offer you advise or even offer to smack her bare bottom for you
it would be hot if you can get him to open up to you and if he talks to you about spanking her in a abstract way or better yet in a reminiscing of when he had to smack her bottom for her
even if he doesn't offer to spank her for you again you will have his account of your wifes smacked bottoms to tell and turn your wife on and make her wet at finger time
let us know how it goes if you decide to have that conversation
you might need to have a drink ot two yourself beforehand lol
it could be embarrassing but a huge turn on lol
fortune favors the brave
👍