Jinn is the God of Light's creation, made for the sole purpose of aiding Humanity in it's pursuit of knowledge.
During the fight against a Leviathan in Argus, Jinn gets annoyed at Ruby for summoning her without a question, but she states that she will allow it once and warns Ruby the next time she summons her, Jinn will expect a question. She also calls Ruby clever to use her power to stop time in order to buy some time to use her silver eyes on the Grimm.
There is not much interaction between them, but Jinn seems pleased to see Ozma in his current incarnation. However, she ignores his plea about revealing the two questions she has left in "Uncovered", refuting his earlier claim to Team RWBY and Team JNPR that no questions remained in the current era.