I think if she's going to be a support character then I'd like to set things up so she's not listed on the lists as one and is treated more as a companion character. It's okay if you play her separately occasionally in the same way someone playing a little kwami bug from Miraculous Ladybug could be played separately for a thread.

But if she's going to be a full fledged castmate that breaks the "too close to each other in canon rule." You really can only play her as support without breaking that rule.

In which case, you'd need to add her to Nyara's app as a companion.