I think I've had a tendency to go overly poetic in OP - I don't want to fall back totally on "style" when justifying that. But it still accomplishes something I wanted to do. Marigold talking this way isn't a literal reflection of reality; it was a moment to create. Still, I do feel a little funny reading it back, and that's unlikely to change.
This to me was an actual turning point for Jane, realizing Mar has more to offer than it seems - that she's opinionated, has a perspective forged by the past, that the words "familiarity", "security" and "closure" all have context for her. Jane's also just a little embarrassed to have her own advice pushed back on her, and hey, maybe she's into that?