Why cannot my Protestant wife receive the Eucharist?

Can someone give me a step by step answer to if/why my non baptised Protestant wife can or cannot receive the Eucharist at Mass, we’ve assumed she can’t , is this correct. ?

The following links should help answer your question. If you have any further questions, please contact Catholic Answers directly.
Recommended Reading:

*] May an Anglican receive Holy Communion?
*]Ecclesia de Eucharistia (Note especially sections 43-46)

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