are you asking b/c you want to have sex with a 9 y/o?

It's a weird question....dont you think?
anyways, a girl should not have sex until she is both physically and emotionally mature. so like she should have already started to get her period and understand how the humany body works, and the reprecussions of sex (i.e. pregnancy, STDs, orgasms) and be able to deal with the consequences