I was glad to read your post, BerberElla, because I think that's what I was seeing and trying to verbalize.
Obviously in her conversation with this other person my ISFJ was extremely invested in getting to sit where we wanted, but she gave no outward sign in the presence of the greeter.
For a matter of fact I felt as though she was observing me being assertive with him with some discomfort or even disapproval.
Then to carry on like that nearly two weeks later made me wonder why she was still carrying that little molehill around with her. There had been no problem at all from my perspective.
I asked for what we wanted.
Was put off
All taken care of.
I wondered if she had trouble asking for what she needed/wanted.
Then there is that carrying the past around with her in a troubled manner. Oh dear.