Twintails are the only right answer in this entire thread.
Because she's my waifu and if I could brush her hair, that means she would be real and we were in some kind of relationship if she was willing to let me.
For a proper brushing, you need to untie the twintails.
Of course having a English dub can make it even worse, especially for a series like this that the company knows won't sell well. I don't even want to imagine her dubbed "EHHHHHH!!".
I would love to be playfully teased and scolded while brushing her beautiful long hair.
Even if she is Jewish
Also the rest of the GJ's, except Tama
They all deserve the brush all GJ-bu's are best bu's