I assume that you are a U.S. citizen. If so, then all your wife needs to prove her eligibility for adjustment of status is that she were inspected and admitted into the U.S. Normally a stamp in her passport showing that she was admitted to the U.S. is sufficient to satisfy this requirement. Therefore she should be able to submit a copy of her passport in lieu of her I-94. At the same time she should apply for a replacement of her I-94.
Form I-102 can be filed along with I-130/ I-485. This is assuming you are USC applying for spouse who entered with inspection.
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Samuel Ouya Maina, Esq. 415.391.6612 email@example.com Law Offices of S. Ouya Maina, PC 332 Pine Street, Suite 707 San Francisco, CA 94104