focus on chizuko and after that Maia or sivney

She is a really good support, She can heal and provide barriers and also allows all allies to take less damage. She is really good for both PvP and PvE in both offence and defence.

Is there a required team for cupid to work or is she good alone?

You can go for Cupid, If it's not an option then you can go for Maia.

You should try to focus Maya or if you really want another healer, monica and chizuko do cmpletely different things so read their abilities and see what you want

Should I replace vh with another sp girl like monica or another chiz?

Who should I focus on next?