No, but Byleth has undergone the ritual before, I believe.
[Now that the trade was underway, Sothis was far more business-like and calm in her focus. She still eyed the extended hand like it was going to bite her though, her eyes narrowed and her spine stiff. She understood that though the trade was vital, it would open her up in ways she would despise to another entity. Not even Byleth was privy to her every thought and emotion - they both ensured there was a wall between them, in that respect.]
no subject
[Now that the trade was underway, Sothis was far more business-like and calm in her focus. She still eyed the extended hand like it was going to bite her though, her eyes narrowed and her spine stiff. She understood that though the trade was vital, it would open her up in ways she would despise to another entity. Not even Byleth was privy to her every thought and emotion - they both ensured there was a wall between them, in that respect.]
I was not conscious during it, however.