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You may be looking for the version of the character sent to Mobius Prime, NICOLE.

NICOLE, in an unnamed alternate future reality, was a sentient handheld computer whom served as the basis for the second device of the same name created by Rotor Walrus. Created in an unseen alternate future reality, she was sent to Princess Sally Acorn in another alternate future Mobius. She assisted the Freedom Fighters of that reality, but was ultimately destroyed helping them to defeat Dr. Eggman following his Roboticization. Long after peace had been restored to Mobius, Rotor eventually created a second "NICOLE" based on her predecessor, and this duplicate was sent to Mobius Prime to assist the Knothole Freedom Fighters. (StH: 22, IYF)