 The total number of coils the daughter makes reflects the total energy the daughter plans to use to parasitize it. So that means the daughter counts. More coils means more room for fangs. Once coiling is complete, the daughter sprouts rows of vampiric spikes along its coil edges. The spikes sink into the host's flesh and begin to siphon off its juices. The daughter won't drain enough to kill the plant. A dead host wouldn't be in its interest.