Archie Battersbee's mum said she has received a barrage of online abuse including death threats, and that a noose was left on her son's grave.
Hollie Dance, from Southend, fought to overturn a High Court ruling that gave doctors permission to switch the 12-year-old's life support machine off after she found him unconscious at their home in April.
Archie died on August 6 after the judge concluded with "profound regret” that his treatment was to end.
