This is a hard call. IMO she is too thin. It almost looks like she is building for an ovulation. An OV would be higher up. If she is carrying anything there is the possibility that they are slugs. All you can do is continue offering her food and keep her away from males. Keep her temps stable with a warm side of at least 90. This will help bring her out of the breeding mode eventually if she refuses food. If by some chance she does lay any eggs that appear to be fertile then try to incubate them and seee what happens. At this point I would be more inclined to say its just a pre build. Let us know what happens.