I can really feel how awkward her family is about her. They released her from her presumable obligation to attend her grandfather's wake, but they don't invoke any special familial affection between her and her grandfather in order to thus release her (i.e. they don't express a belief that it'll be especially hard on her), so it comes off more as if they don't want her in the sight of others.
This is hard for me to definitively prove as it stands, but I get the feeling that her family is only in her corner as to mitigate the shame she causes, not unlike how parents in Japan subsidize their hikikomori children because the alternative is risking the exposure of community scrutiny in a society with 1)
different attitudes towards mental health and therapy, as well as 2) a higher emphasis on conformity and not disturbing others with controversy. The friend she relied on after the first time she was busted comes off that way, as well.
They're all still involving themselves with her, but in this strange detached way where they don't even hold her accountable for ruining her life trying to play "hero" in the inept way she did. They're not supporting her, they don't express any particular understanding of her circumstance, they don't condemn her, but they still offer her things like housing and money.
I wonder if this is intentional characterization for all of them. If it is, then there's this interesting dynamic where Yuri is consuming every bit of material and immaterial goodwill expensed by the people freely or otherwise still in her life, all for the express purpose of seeing through a pursuit that could have been earnest but is marred and conflicted at the root by desires so puerile they better suit a schoolgirl rather than a woman scraping 30.
In conclusion: sensei best girl.
Her character has developed very well, but she is still a little bit of crazy bitch.
That's the best part.
Imagine having your 29 year old daughter, throwing away her future and being utterly obssed and in love with a little 17 year old boy.
"Little"? Let's not get crazy, here. Surely, you've met high school boys, talk less of a 17 year old boy.