I doubt a 2 ft mangrove female has been breeding, personally. I'd suspect other issues, and steer clear unless you are confident you can resolve them (unless you just really want the one that looks good).
When rehabbing mangroves (many years ago), I always made a point of using full spectrum lighting, which I didn't make a habit of with monitors. I don't remember WHY I did it, or believed in it; but I do remember being convinced of the value.
