I think it was from a series, but a couple are trying to get an apartment together, but all the real estate agents can't find anything for them, possibly because they're homophobic. But then they meet a really cool agent whose worked a lot with same sex couples and finds one for them
So the sister was really just waiting there for that long doing fuck all huh.... What a cunt.
I got the impression that Suzu hadn't realised what was going on, considering how surprised she was to see Hana and how cluelessly she acted about the situation. I also don't think she believed that Lily would kill herself, since, in her mind, Lily she was the more fortunate one of the two. She thought that she just wanted to say goodbye to a place she wouldn't be able to visit again and she obviously expected her to be back soon. From her point of view there was no reason to be doing anything other than wait. So, while she might not a very good person, this situation is mostly a testament to how little the two understand each other, rather than Suzu's malicious character.
Thank you for saying this a lot better than I could have, I was hoping someone would the moment I saw that comment. ^_^