I've uploaded a copy of the Abby Grossberg complaint here: https://www.documentcloud.org/documents/23787336-complaint-abby-grossberg-v-fox-news-et-al
Notably, this case is in its very early days. Carlson had only recently as last week notified the court he was aware of the summons. Fox & Carlson still have two months to ask for dismissal. Personally, I'll be watching to see if Fox moves for a split trial now; if Carlson is forced to hire his own counsel; or if a settlement is suddenly announced.