Trade for  PrurientPie

Isabella often wanted to help people both in regarding shapeshifting matters and confidence relating to the things they do in their day to day. When Pastry asked Isabella for the 'works', they had to oblige.

First, showing them their own combat skills and capabilities with a sniping course in the nearby valleys. With some tutoring, Pastry was shooting just as well as Isabella. Though that may be due to the latent magic and intention that would slowly effect the increasingly inaccurately described human.

Isabella turned into a light craft to give Pastry some piloting training next. A training that would be dangerous for a novice if it weren't for the sentient vehicle and their sudden intuitiveness with the controls. Isabella would notice their pilot's new budding tail and pointed ears and decided to up the ante.

They would help further encourage their further similar friend. Taking them shopping, going to bars with Nia and Grey, and of course working in the Maiden Menagerie for a shift. Zeystry would cotton on to what's happening to them eventually and embrace it, these new feelings and powers flowing through them. If only they could harness it. A desire that would soon be met.

Isabella would help their twin master the energy that was changing them and direct it into other ways- from creating and becoming new forms or opening up portals.

The new Zeydaan would be a near perfect twin of Isabella's other form, albeit with Pastry's personality and memories still intact. They would feel confident and amazing with the power of the multiverse at their fingertips. Though as Isabella would want, they could change back at any time.

But in the meantime, having identical capabilities make for amazing tennis doubles.