I'm not sure, I'll ask her or get back to you on that or reply here.
I also wanted to give you an update on the subject by saying that now I am getting emails for all threads I am subscribed to. Maybe there was a delay like you had, only mine was longer for some reason?
Could be my location or the fact that I often use proxy servers like Zen Mate to bypass my country's ridiculous bans on Twitter and Youtube.
Either way, whatever it was, it seems to have gotten fixed now and Iamhappy!