Is she flowering?

Si! Hace más de 7 días que empezó la floración. Los pistilos aparecen después de una semana que empieza la transición al estadio de floración. En estos momentos tu planta está en pre-floracion.

No, they are just primordia/pre-flowers and an indication of gender. Flowering will commence in 2-3 weeks time, as indicated by small "tufts" of pistils developing at the growing tips of the branches and main stem. Your plant will still need "grow" nutrients with nitrogen until about the second/third week of actual flowering. Personally I like to feed with grow nutrients for the first 2-3 weeks, feed the next 2 weeks with half grow and half bloom nutrients then switch to bloom nutrients only, through to the end. Hope this helps,.......... Organoman.

That's called pre flower your getting close youll be into flower once you switch your lighting schedule to 12-12