Well what a disappointment, the MC did the right thing after noticing that she's pushing herself, but we've already seen that happens in every other manga ever, at this point it comes off just as an easy way to make them go through some kind of character development without
making their relationship go to the next level. I would be more interested in a scenario where following her friend's absurd instructions ends up benefiting their relationship exactly the way it was intended and not in this unexpected (actually expected) way.