I've noticed my females tend to look bloated when my males don't so I think it has to do partly with being eggy but I also think they scavenge more from the tank than most males. Do you fast her? If not I would fast her for a day or two & see if that helps at all, keep an eye her to see if she gets any bigger. If she does you can remove her to a QT tank & use some Epsom salt.