1) By vote of the college Panhellenic after recruitment. 2) Yes. 3) Current total is public so she can just ask her Recritment Counselor or the Adviser. 4) Yes that is public also. The entire process is public. You might be interested in reading the Recruitment section of the NPC Manual of Information (aka The Green Book) which you can find here:
https://npcwomen.dynamic.omegafi.com...nformation.pdf