Jane Shepard, with the only logical explanation.

"Tali? You sent that request ping?"

Tali had always admired Jane Shepard. Her mind was razor-sharp, honed by years of service in the Systems Alliance's special forces and further sharpened by her experiences as a Spectre hunting down Saren. She was determined, confident and utterly fearless in a way that had made Tali want to emulate her as much as she could, with an easy charisma that drew people to her like a magnet. Her body, already an expertly-maintained fusion of lean muscle and juicy curves, had been further enhanced by the Lazarus Project; now her previously formidable toughness, strength and flexibility had been enhanced to superhuman levels. Unknown to either of them, this had had a profound effect on her sexual performance; where before even she might have struggled to take a single Krogan, now Shepard could safely have a dozen of them run a train balls-deep on each of her holes without lasting damage or drink a gallon of jizz before she even began to feel bloated. In short, the perfect set of holes to give Tali's new tool some relief.

Needless to say, Tali was more than a little mortified when she heard her idol step out of the elevator and quickly spun around to face her.

"I-I'm sorry, Shepard! It was an accident, I fell against the console and... Shepard are you listening to me?"

The redhead licked her lips and strode over to Tali. Keelah, was Shepard staring at her crotch? Oh no, this new cock was going to make Shepard think she was a freak! Her idol was going to think she was a horny pervert with a throbbing shemale cock swinging between her legs! Shepard was-

"Relax, Tali. If you wanted to talk to me alone then you only needed to ask."

-going to be very understanding about the whole thing? What? Shepard put a hand on the side of Tali's head and looked her dead in the eyes through her faceplate as the other hand came down to rest on Tali's newly-expanded hip.

"Now, tell me what you need me to help you with. I'm always willing to help you with anything you need, Tali. No matter how big the problem or how hard it is to solve, I'll do whatever it takes to make you feel better."

Tali was glad that Shepard couldn't see her face properly or hear her panicked stuttering. It was bad enough that her idol was getting so close to her, but the stern look on her face was doing funny things to Tali's heartrate. Tali's mind spun in circles as she tried to process everything that had happened in the last few minutes, before settling on a train of thought that the insidious magic of the ring was happy to encourage.

This was all a dream! Why else would she find a magic ring in an otherwise empty medical bay that made her grow a massive cock and balls? Why else would her panicked flailing manage to dial Commander Shepard in just the right way to get her alone with Tali? Why else would Tali's crush be standing so close, one hand on her head and the other on her hip, telling her to let Shepard take care of all her problems? It had to be a dream! Tali licked her lips and leaned into Shepard's grasp.