This little divergence makes sense. Before she could get bitter about being stuck in an unfamiliar form without access to her magic, she encountered someone who told her that he can probably raise her to godhood and help her find a way to access the magic that she thought she lost."I…" She looks away. "Sort of… Fell out. With Princess Celestia." She hesitates again and then turns back to me. "The other side of the portal is a magic mirror. It.. showed me myself as an Alicorn. And, well, that seemed like the best goal for my research.. and Celestia wouldn't tell me anything about how you become an Alicorn. I guess I just thought the mirror could help me… Ascend." Another sigh. "And instead it turned me into a Monkey."
"Ape."
"What's so good about being an Alicorn?" Lynne shrugs. "If you could use magic anyway…"
"Alicorns don't age. If I became an Alicorn I'd have all the time in the universe to learn magic, the magics of all three tribes instead of just Unicorn magic. And having the magic of all three tribes makes their magic much stronger." This time it's a huff. "I'd know more if Celestia had actually helped me."
Lynne looks at me. "So… Like us?"
Miss Shimmer frowns. "Like us what?"
"Grayven can do a thing he calls 'Awakening' where he alters you so you can become much more powerful."
Miss Shimmer looks at me in astonishment. "You can do that?"
"I can do that to Humans. I've never done it to a Pony before. Your metaphysique is probably quite different."
"I'm a Human now."
"Yes, but I assume that you're going to want to go home at some point." Hmm. "Okay, here's what I think we should do. You need a place to stay, people who can understand your language, research materials and, um…" I nod at her right fist. "Physical therapy."
She looks at her right fist too. "Ye-eah."
"If you want to sign on with me, I can arrange that."
She looks a little suspicious. "You'll let me study you?"
"Hah. I am a fascinating subject. And I can probably find you a few other subjects as well. Iname?"
A puff of air and Miss Amane is sitting next to Miss Shimmer, who look around in shock. "Ah! How did you-! Teleportation? No, that wouldn't-."
Miss Amane smiles beatifically. "Master gave me the power to move at super speed."
Miss Shimmer starts to smile. "Oh, I'm going to study the hay out of this."
At this point, she's basically a more pragmatic, better socially adapted version of Twilight Sparkle. With a tiny case of bitterness.