If Mureil is aware that her symptoms are similar to the initial symptoms of lung cancer then she should start taking medical treatment as fast as possible.
Cancer doesn't take time to spread neither it is a normal disease which can be treated easily. Mureil should take her initial symptoms seriously and shall start the treatment all at once and continue it till all symptoms of lung cancer are eradicated
Assuming that the bird pollinators were significantly diminished, human dispersal will be a useful means of dispersal. Currently, in the tropics, Jatropha is intentionally planted by individuals for oil production.