She's the most important character of the series, whether you like it or not.
She was make the most important for this arc, she wasn't even namedrop until this arc. Man, she is not even part of the premise, she is just a byproduct. And just because she is so called "most important" doesn't mean i want to see a girl bitching about how she can't face her problems because she has too much pride.
And that's considering your headcanon she is the most important. Excuse that people want to see the main characters being lovely dovely and face some hurdle and not being forced into a drama they had nothing to do with.