“Hermione is the only one I can think of off-hand which doesn’t quite seem to apply.”
Hermione was willing to put up with mudblood aspersions because she loved her family. She also erased her parents’ memories so she would be free from worry about them and they from worry about her in her fight against LV. It’s kind of the opposite of Molly, whose whole family was deeply involved in the fight. Hermione shielded her family from what was essentially not their fight or within their power to affect—at least directly. I think that kind of love enabled her to survive and concentrate on what needed to be done. She seemed to be the least conflicted of the threesome, perhaps because her family was considered as safe as it could be.
But you are right about family not being as prominent in Hermione’s life as the others, although we see them escorting her to Diagon Alley, traveling to France with her, enjoying her at Christmas breaks and so forth. They are definitely supportive of her and her willingness to be forgotten by them is a sign of love to me.
Definitely! We could also look at the Weasley's as a surrogate family. Even without a formal connection to Ron, Herione was taken in during holidays and summers, brought to the World Cup. Had she married someone else, I'll bet she'd still be very close to the family.