It looked like Eric Edwards came in her pussy, twice. Once, when he fucked her doggy style, and again when he fucked Angelique in the missionary position just before the cutaway. I wish they would have shown some tit sucking, on Angelique.
She was platinum style blonde in the "Gamesters Of Triskellium" episode. You are thinking Susan Oliver as "Vina" in the "The Cage" pilot that was repurposed to the two part "The Menagerie" episode where she plays an Orion "slave"girl(we later find that THEY are the ones who enslave in a later Trek iteration) in an extraction from Captain Pike's memories. Or Yvonne Craig from the Dagger of the Mind where she played a follower of (former) Captain Garth.