Maybe Himari is already in love with Yori without realizing it, but the way the author describing it doesn’t look like that at all. If you still need to ask yourself whether you’re in love with this person or not, then you aren’t.
Without meaning at all to downplay your obviously painful and very understandable experience, there’s a significant difference between your situation and the one in the manga.
Himari is the first to “fall in love at first sight” (her words) with Yori—she’s completely taken with her, she seeks her out, and she consistently wants to be with her. She’s immediately got a strong emotional investment in Yori—the question is about the kind of love she is feeling, or might come to feel. She doesn’t start out wishing in general terms for someone to love her, then Yori presents herself and pressures her to generate special feelings for her—Himari’s feelings are already “special,” although not (yet) specifically “romantic.”
Himari is portrayed as being extremely enthusiastic but also very naive. She doesn’t know what romantic love is supposed to feel like, and the most recent chapter is pretty explicit about the issue it’s posing. You’ve got the following qualities, where you:
- Want to be with the person
- Miss them when you’re not with them
- Think about them a lot
- Want to do things to make them happy
- Don’t want anyone else to be more special to them than you are
- Think about kissing and otherwise being physically intimate with them
So is the last one essential to romantic love and does it inevitably come along with the others, or is it something a person can come to feel over time?