I agree Yuzu is an enabler and you can see her mom is the same with the Sho guy (who would marry someone and be ok with that person never being around? Or worse, make an arrangement to take care of someone else's teenage daughter lol wtf).
Which is why when people say, Yuzu should just wait for Mei to come after her, I don't understand what their logic is. The entire series goes on and on in circles because these girls cannot take a stand for what they truly want unless pushed by other people. In a way, Mei is actually a bit better because she at least moves the relationship forward by instigating Yuzu passive-aggressively into leading them to the next level.
So on ch. 36 Mei has basically put all the chips on the table and said what she feels for Yuzu is not some teen lovey dovey feelings but adult love. Her way of communicating the problem is terrible but Yuzu's apparent inaction for months is just as bad. What I am hoping for is that Yuzu will finally clue in that she is not living in a fairy tale (as hinted all along by Matsuri, when she criticized her for giving rings to Mei too quickly). At this point she either acts like the mature person someone in Mei's situation needs her to be, and try to work things out together, or just quit because there is no way Mei will be with her if she doesn't show she has a backbone.
(As for Matsuri and Harumin, I like them because they are true friends to Yuzu and not selfish, unlike both Mei and Yuzu who are so absorbed into each other that they don't seem to pay attention to anything else. I hope they end up together, or at least do not go for Yuzu because that would be underselling themselves...Yuzu is not as good of a friend to them as they are to her).