Can an arbitrator for domestic disputes in Qur'an 4:35 be a non-Muslim?

> And if you fear dissension between the two, send an arbitrator from his people and an arbitrator from her people. If they both desire reconciliation, Allah will cause it between them. Indeed, Allah is ever Knowing and Acquainted [with all things]. -- Qur'an 4:35 I interpret "his/her people" as meaning "his/her family" (which seems to match some translations at Islam Awakened and this answer to my previous question). A convert, for example, may not have any Muslim family members, and I'm wondering if they can use non-Muslim family members for arbitration. **Question**: Can an arbitrator for domestic disputes in Qur'an 4:35 be a non-Muslim?