YOU are the victim in this interaction not her.
write down everything that happened and email it to your manager asap so if she is stupid enough to make a ‘complaint’ he has all the facts from you.
I’m Christian but I am so angry on your behalf by this women’s antisemitism.
if I’m picking a course I’m interested in the trainers experience / qualifications / presentation style - I’ve never thought to question the persons gender or religion or race etc as it’s totally irrelevant. As long as they ‘know their stuff’ and are good at teaching it - that is all that matters.
for her to tell you to your face she wouldn’t have booked your course or come to another on the basis of your faith shows not only how nasty and antisemitic she is but also how unprofessional she is.
she needs urgently pulling up for her awful behaviour and I hope your manager will back you up and go back to her organisation HR to tell them what she said and to make it clear that she is not welcome in any of your company’s courses as your company does not tolerate such discriminatory practices by any participants.
so so sorry you have to experience things such as this. I totally do 100% believe it happened - but at the same time - I can’t believe (as in I’m just do shocked ) she thought she could do this to you.
Freedom of speech does not give you the right to go around insulting others.
Really hope you report this and don’t let her get away with her appalling behaviours.