Petra has taken part in several international oriented homeopathic seminars and speaks Dutch, English and German.
In 2001 she attended the International Congress Homeopathy for Children in St. Gallen, Switzerland. In 2002 she took part in the international seminar by Dr. Judith Reichenberg-Ullman and Dr. Robert Ullman (USA) about the Homeopathic treatment of children with ADHD and other Behavioural Disorders and Learning problems in Zurich, Switzerland. In 2012 she attended the International WISH for Children Congress - Childhood Sensation in Homeopathy - in Freiburg, Germany. In 2016 she was a participant at the international seminar with Michal Yakir about The Wondrous Order of Plants in Munich, Germany and in 2017 attending the international WISH Congress for treatment of mental and physical trauma.
Since 2003 she is a regular participant of the seminars with Dr. Rajan Sankaran in Munich, Germany.
"If you want others to be happy, practice compassion. If you want to be happy, practice compassion."