Its non hormonal so I wouldn't think so, BUT there has been studies showing if you have a tumor it may increase its growth. Something she would want to stay reasonable with the dosage and have her PCOS monitored on a regular basis.
i had a gf who had pcos and also used gh and peptides.
in my expereince diet plays a really big role in pcos, once she eliminated grains and went with IF diet there was a big improvement and gh/peps did not seem to make things worse though it was prob only a year with gh stuff.
it was a long time ago that i looked into all that but if i remember correctly progestrone was more commonly associate with increase in cycts. the cycst are different then tumors.
my x had surgery to remove 2-3 cysts and 6-12 months later started w peptides, then went back and forth between peps and gh for a year, i lost contact with her after but never heard of any issues during that time.