There is a reason why Ayera probably could not marry anyone else if he died. He had created a great tribe and with it comes certain shackle.
Not only for him but also for his family
The warrior under him would see it an insult and it would be worse if she is pregnant with his child.
Even more so, if it's a son.
And that is why he wanted to make her life easier. She did not choose her life and he did not choose his.
So, the only thing he could do is try to make it better. He had promised in her residence that he would do this for her.
Burchu is here….it means she also probably deduced that there is someone that did not want him to know about what happens in Utgard.
And she probably deduced that the person is Mayeux. Maybe she had suspected it the moment he enters his residence and ask her about her father.
He sighed
'She sacrifice things for me. And it is not only me that sacrifice things for her"