Very nice. I got a good sense of 'young adults graduated from Hogwarts' from this, a feeling/impression of a Hermione who had flowered into young womanhood. Maybe it was the way she 'perfectly fitted' into Harry
I'm glad you didn't artificially keep them totally apart - well, aside from sending Harry to the other side of the planet! - it made sense for Harry to call her up on the telephone.
> There is none of the blah that I felt with Cho, and none of the loud, in your face attraction that I felt with Ginny – but a warmth, a comfort.
Excellent sentence; well, the 'blah' could have been replaced with a different word - 'excitement'? 'first-time buzz'? But the 'in-your-face attraction' and 'a warmth, a comfort' were perfect for the other two.