1863 - Calamity

HIC's race has been wiped out by a psychic shockwave, leaving her with no empire left to rule. On orders from her new master, she uses her ship to navigate a circuitous route to another universe, the one that is home to planet Earth. She disembarks somewhere in the American western frontier in 1863. She hides her ship, and begins exploring. 

She wanders about the wilderness in Wyoming. She encounters families of migrant settlers from the east. She kills and eats them, and burns down their houses. She encounters bands of Native Americans. She kills them too. She's in the middle of a major skirmish with natives she seems to be enjoying, when she gets shot by a rifle. It wounds her more than an ordinary rifle should. In the distance, she can see a green, muscular woman, even taller than she is. She's dressed like a frontierswoman, holding the rifle. It is an adult female cherub named Calamity. Her nickname as a notorious figure in the west is Calamity Jane. 

HIC and Calamity engage in combat. The natives all get the hell out of there. It seems like an even match, but Calamity gets the upper hand. She beats the crap out of HIC. She strongly advises HIC to stop fooling around and get to work. Calamity then climbs onto an absolutely massive horse, and gallops away. HIC develops begrudging sense of admiration for whoever this woman is. 

HIC staggers, still injured, to the wreckage of a nearby settlement. Looks around for tools. The green alien woman dressed as a very large human had the right idea. She needs to blend in with this primitive alien race if she's going to make any progress here. She finds a sturdy hacksaw, and cuts off both her horns, so the stumps are buried in her hair. She takes a sickle, and dramatically shortens her hair. She finds tattered lengths of cloth, wraps herself up in a disdainful approximation of primitive human garb. She walks away to begin her long term schemes of conquest, as demanded by the terms of service to her master.