OF course, Astrid couldn't mention the more intimate moment with Wulfric. That was strictly between the two of them, and there was no need for Reas to know about it. He also didn't want to elaborate on what exactly had happened with the Emperor and Valentine. If he gave too many details, his brother might jump to conclusions and form a bad impression of the Emperor. Astrid didn't really care if Reas thought poorly of Valentine, but he at least wanted his brother to not actively dislike the Emperor.
After all, there's a high chance they could be family in the future. It's better to get along with the in-laws. This was especially true now that Wulfric was trying to mend his relationship with the Emperor.
