Uhm, I think that's a lore inaccuracy, Scarlet is known by "knowing" our movements even before we face her, if that's not enough, the whole order of the cobra lore is about her being cursed in her crusade against the evil magic, ugly monsters should be an actual treat for them, not a consequence, so I can't say is impossible, but I doubt that makes sense, even I tough I read somewhere that beside she wanted to leave the building something restrained her, I will ask about this on tibiasecrets cuz i don't remember.
Update: I got confirmation that indeed even if Scarlet assaulted Iksupan, Ugly monsters at Cobra are a consequence of that, so they went after cobra bastion with Scarlet not the other way around.
Also it's likely that whatever lead Scarlet to Iksupan had nothing to do with Galthen due the cobra curse and instead it has more to do with the robbery consequence of the money and blood lust that the curse itself throw at them.
