I don't want to rock your boat but are you sure she is telling you the truth,
Anyway not for me to question her, just enjoy her make a fuss of her when she comes home reclaim her as soon as possible in other words fuck her for longer than half an hour,
You said sometimes she comes home exhausted and you have to wait before she can have sex with you after half an hour of sex don't you think she wouldn't be that tired,
I have had sex with my wife after she has been fucked all night and she comes home buzzing and is ready for more,
Just saying,
![👍](http://cdn.jsdelivr.net/emojione/assets/3.1/png/64/1f44d.png)