Adding category to the easysocial comment reply notifications

Hi,

Presently in the easysocial notification stream when a user reply to a comment using the easyblog comment system then it shows
"User replied your comment posted in blog post: blogpostname"

I would like to show "blogpostname" and the blogpost category.

I want to achieve this myself but I could not find the function which generates the notification.
(I searched for the constant "replied your comment posted in blog post" in the translation files but it is not present)

Can you give me the location of the function?

Kind regards,