Elas apelaram para a corte da Convenção Europeia pela Liberdade Religiosa. O artigo em questão é o 9 - "Liberdade de pensamento, consciência e religião". Vejam a redação deste e como dá margem para manter esta proibição (item 2):
1. Everyone has the right to freedom of thought, conscience and religion; this right includes freedom to change his religion or belief and freedom, either alone or in community with others and in public or private, to manifest his religion or belief, in worship, teaching, practice and observance.
2. Freedom to manifest one’s religion or beliefs shall be subject only to such limitations as are prescribed by law and are necessary in a democratic society in the interests of public safety, for the protection of public order, health or morals, or for the protection of the rights and freedoms of others.