ok, shouldnt they say succubus?an incubus is a male

By definition An incubus is a demon in male form who, according to a number of mythological and legendary traditions, lies upon sleepers, especially women, in order to have sex with them

While a Succubus is a female demon which comes to men, in their dreams to seduce them and have sexual intercourse with them, drawing energy from the men to sustain themselves, often until the point of exhaustion or death. This legend was an explanation for the phenomena of wet dreams and sleep paralysis.

So the Martha Schmidt char should have been called a Succubus since she was viewed as a demon that stole someone from there group.

However my guess would be they were referring to the end of the film and were perhaps saying the Hittites were calling on it to deal with Martha Schmidt