Lalter 33

"I am not an ordinary being. Like a dragon; a crushing tempest. Many remember my power and fear it. However, there are times it is necessary to have someone you can be with freely. Yes, I am talking about you, Master."

Alter or not, she is still Artoria, with the same warm smile. The quote above is her Bond 10 line from FGO Arcade. Lalter is also kind of a busybody, so if Master went for her route, I assume she would be rather fussy about his well-being. I believe she would definitely want Master to be with her freely as well.