...one of the following has to happen before the rapist can traumatize and kill the young girl in our scenario:
*The spaceman wants something more than it wants there to be no suffering (in which case it is less than maximally benevolent)
We obviously have to rule this out. It doesn't logically follow that God
must want either/or in this case. (False dilemma.) God might not want a certain thing to happen but He might reluctantly allow it to happen. Whence the theological necessity for God to either 'like' the bad stuff that happens or prevent it from happening. God condemns sin. He warns against sin. He punishes sin. Why assume that He must prevent everything He dislikes (sin) - and if not then it proves He isn't benevolent and must 'like' sin because He doesn't absolutely prevent it from ever happening?
*The spaceman lacks the power to get whatever it wants without resorting to means to ends (suffering is a necessary by-product of getting what it wants). In this case it is less than omnipotent.
We obviously have to strike this one out. God is able to prevent or cause any/everything. Omnipotence is non-negotiable. Of course it doesn't follow that God actually DOES everything He wants. Omnipotent beings are ABLE to exercise self-restraint. If they could NOT exercise self-restraint they wouldn't be omnipotent.
And no, suffering ISNT necessary for God to get what He wants. But suffering might be necessary for us to get what we (think) we want.
*The spaceman lacks the knowledge that the suffering is taking place. In this case it is not omniscient.
This one is ruled out as well. Omniscience is non-negotiable. And clearly God knows of every evil and will punish it accordingly. We should never mistake God's inaction as a sign of His ignorance of evil.
...If this is a false trilemma I'm all ears. Otherwise a tri-omni spaceman does not exist in the same frame of reference as the universe in which we live.
I think it is a false trilemma because of your unreasonable/unfounded presumption that God's apparent inaction shows He must 'like' all that He permits. And that just because sin happens it proves God either doesn't care about it or isn't willing to prevent it.
You presumably expect God to prevent sin/evil
before it even happens. But it's logically incoherent to object to something which hasn't ever happened and never will - because God prevents it.
Yes, God could have created Adam and Eve in such a way that they had no choice but to remain perpetually obedient and programmed to never 'sin' - no robbery, no murder, no lying, no choice. And then God could pat Himself on the back and brag about how omnipotent and benevolent He is and what a great victory He had achieved over satan.
But what shall God's accusers then say? Nobody freely chose to obey God. Nobody rejected sin because there never was anything to reject.