Q: I have someone who would like to join the Catholic Church. She received Baptism and Confirmation in the Syrian Orthodox Church as an infant. What does she need to do? Do we accept her Chrismation as well?
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A: She should be received by the nearest parallel Eastern Catholic Church in your area. Her baptism and chrismation/confirmation are valid.
As an Eastern Rite Catholic, she is then welcome to communion in any Roman Rite Catholic parish.
If she is received in a Roman Church, she becomes an Eastern Rite Catholic. Note that there is to be no ceremony and confirmation is omitted.
Here are previous posts: https://paulturner.org/eastern-catholic-church/ https://paulturner.org/receiving-orthodox-christians/.