Sara does seem like she reciprocates Wakana’s feelings. Makes me think this ‘unrequited’ arc might set up that whole “society won’t accept lesbians” bit. But I don’t know how dramatic this manga will get… then again Sora was slapped by her mom so there is a possibility this will get heavy with angst.
While I want Waka to be happy, the truth is sometimes you don’t get together with your first love. But that doesn’t mean you can’t love again…. Maybe she just needs to look around and see she has the perfect accomplice/partner in Yuina already!