The woman died from string used for flying kites.
Cerol is the name given to a mixture of glue with ground glass (or iron filings) which is applied to the lines of parrots, also known as kites. The wax is applied directly on the line to be used for flying the kite. The glue serves as a binder, while iron or glass powder serves as an abrasive. Its a game in Brasil to see who can cut the line of the kite of the others.