Phee weakly smiles at Eva. "P-please do that, it sounds w-wonderful I give up?"

"Good girl." 

The glass around Phee shrinks away, concentrating down into a small deep-pink jewel. 

Eva's eyebrows jump, but she smiles and pockets the jewel... 

And then lowers her head to kiss and suckle at Phee's cock again, focusing in hard with all her skill to drive her over the edge. 

Phee preens happily at the praise, and uses her newly freed hands to try and gently pet the Eva, and moans in delight  as Eva starts sucking again and gets to work bringing her the rest of the way to orgasm. Followed by letting out her loudest moan yet as finally gets the relief of orgasm and spurts her cum into Eva's mouth.

And definitely isn't at all disappointed by her cum lacking the proprioceptive sense her water had. 

Eva swallows, laps Phee clean, then leans back and grins. 

"Well," she says. "That was fun." She gives Phee some firm petting on her hair and shoulders and sighs out firmly, her breath stilling. "You were a very, very good girl." 

She reaches into her skirt - right next to the obvious tent of her cock - and pulls out the little jewel that her glass turned into. 

"Well," she says. "That answers that question." 

She looks over at Phee, and holds the jewel out in her palm. "Have a look at that. Do you know what you're looking at?"

Phee happily nuzzles into the petting. "T-thanks! you were very very very very good too and I'm glad you had f-fun!"

Phee is gonna try and flop next to and snuggle Eva now.

And move to help to relieve the dear Eva of her cock's hard-

Ignores her horniness resurgence and tries to pay attention to the gem Eva was showing her (and not the cock she's not).

"It's..."

"... A pretty gem made from your glass?"

"It's a pretty gem made from your spirit. It seems you're enough of an erokami to count." 

Eva smiles. "I beat you in a sex fight, so I get a little piece of you. It's enough I could choose to compel you to do one service for me... though I won't. What I might do is make a bracelet out of it to hopefully help with my medication. I bet you're a water spirit, since you make water." 

"It works like that??"

"Cool!"

And ignoring the feelings she's definitely not having about the thought of something containing a piece of her being made into jewelry for Eva-

And all the things she could potentially compel us into with the marble if she wanted to take advantage-

Phee follows up with. "I-i hope it is able to help with that!"

"Um also I've noticed that you're looking pretty hot- I mean hard wait I don't mean to say that you're not hot, cause you are very hot! I just meant that i was trying to say something about your being hard originally which is that I wanted to ask if" you'd make me "I could h-help you with that?"

"I would love it if you could help with that." Eva grins, runs a hand possessively down Phee's back, and puts the jewel away safely.

"Yay! I'd love to help you with it!"

While leaning into Eva's touch, Phee will somewhat shyly move to pull down Eva's skirt and release her cock.

Eva actually flushes a little. 

It's different when it's someone from Earth. 

Her cock bounces free, still quite hard. She's not wearing any underwear beneath her skirt. 

Cutee, Phee will go to-

Resist her impulse to start playing with Eva's cock and ask gently.

"Are you okay? It's fine if you change your mind on wanting me to touch your c-cock?"

She opens her eyes and nods. 

"Yeah. I... it feels more intimate, doing it with someone who might see me as more than a good lay. But I'm okay."

Gentle smile at Eva. "I'm glad you're okay, would it make it feel too intimate for you, or would you like me to start touching your" beautiful tasty delectable looking "cock, or would you need a bit to think on it or...?"

Eva smiles. "I would like you to..." She pauses, considers her words. "Suck it, actually."