I don't think the nerd wedding website consciously meant anything to her, may be subconsciously it did relate to her thoughts, as she is not over you. When I separated with my ENTP I had very little inclination to contact him and ask him how he is doing. He had emotionally hurt me to the point that it simply became an illogical thing to do (yes practically all of the feeling died off). The fact that she was constantly contacting you means that she still has feelings for you.
I personally would also would not send a wedding website as a hint to a guy which whom I just separated, broken-up, or had a fight with. It would just seem an emotionally crude thing to do. Therefore I don't think she was trying to imply anything by sending you the link.