When the spirit comes through, it's helpful to know how the Ubi and Nympho spirits differ, as this will improve your experience.
Nymphos are... tentative. They wait for you to ask, for you to make the first move. If you don't... they will just hang.
Ubi generally like to make the first move.
If you are not an extremely aggressive lover, nymphos can be a bit difficult to bond with. A lot of people have issues asking for what they want, or need. Nymphos put you in a position of HAVING to do this...
The Ubi, on the other hand, tend to adapt to the person, but are almost always looking for an opportunity for fun, and unless they're dealing with someone who doesn't take to lovers who make the first move, they are almost always the ones to start an encounter.
Ubi are also more likely to take ideas from your head and provide them, whereas nymphos may know your ideas, but will not act on them unless you specifically ask them to.
Good luck with your conjuration - I hope your experience with the nympho is rewarding.
"She’s all the unsung heroes who... never quit." ― R. A. Heinlein, Stranger in a Strange Land
“There are more things in Heaven and Earth, Horatio, than are dreamt of in your philosophy.” ― William Shakespeare, Hamlet
“Every normal man must be tempted, at times, to spit on his hands, hoist the black flag, and begin slitting throats.”
― H.L. Mencken, Prejudices: First Series