You decided to help Liz with pleasuring herself.
She didn't really know how to do it but apparently no man she had been with had ever complained. She was working the whole shaft...
You look at her. She looks pleadingly back. You work yourself to behind her, your hand holding hers, holding your previous dick. She smelled so nice... her hand was warm. The smell of sex was pretty thick in the air. You gently guide her hand, giving gentle strokes just around her, er your, penis glans. She leans into you and starts to tremble. Her hand slowly slips away and starts to pinch her nipples, the other works the area under her balls. She's rubbing that area as if it was a clit...
You feel her round, curvy ass rub against your new pussy. You start to moan and rub yourself against her, almost unconsciously. Your other hand works itself down to your own clit... You try fingering yourself. You weren't getting much out of that. You tried rubbing your own clit - ooh! It felt kinda nice but too much pressure. Slower. Gently. You rub yourself and masturbate Liz.
The newnewss of your genitals works you into a crescendo of an orgasm... but it's not like your own male one. You can keep going after it. In fact, you still feel horny. You continue.
Liz, meanwhile, seems to focusing as strongly as she can from not cumming. She wanted to enjoy this for as long as possible. She leans back and kisses you.
You could go further with her, if you wanted. Or you could just finish her off now and go back to the Transfer Clinic, or try new devices with her. You could even deny her an orgasm... you wondered if she would be into edging.