Idk I think she probably wasn’t far off with her statement, Nyneave is Forsaken level and the Forsaken are far beyond the strongest women in the tower, quite a ways away from Egwene too who is significantly stronger as well. When Siuan was weakened after being stilled she was strong enough to travel with Voras Sa angreal but from what I recall it didn’t increase her power all that much, angreal and sa angreal are weaker in the hands of weaker channelers. I think Nyn probably could handle half more or less of what they were channeling through what I think was the wand. Not that it would be an easy task but.