As of now, it would take about 10 minutes continuous siphoning to reverse the process of decomposition a single day, and about 15 to kill someone. So on a human target she can inflict the equivalent of what would be 1 day's worth of draining in 2.5 minutes. Trying to make rate of recovery variable sounds to be more trouble than it's worth and not really what i was going for.

Of course, it gets a tad odd trying to compare decomposing a humam to weathering a brick wall. The long and the short of it is that I'm trying to make it work at a relatively moderate pace