A spin-off of ABC’s “The Golden Bachelor” is coming this fall and will revolve around a woman looking for love in her “golden years” — much like the male-centered iteration which preceded it, network execs announced Saturday. Casting is “well underway” for the woman contestant, ABC said. The news came during a Television Critics Association panel in Los Angeles, where speakers highlighted the success of the new franchise, which garnered 43.4 million total viewers in its first season, says Entertainment Tonight. Gerry Turner, the star of “Golden Bachelor” Season 1, married contestant Theresa Ni…