how to deal with friend going full on antisemitic

Its probably late to ask this but my friend started falling down an antisemitic rabit hole in tiktok, at first it was some comment about hitler and I didn't think too much about it bc she really likes history but then she went full on like the conspiracy route and all, and I told her "you know you're repeating the same nazi discourse from ww2?" and she got super upset and cocky saying that I should know about it and "it must be nice to stay ignorant of the reality of the world" and honestly I was tired of all that and just stopped responding her messages altogether. I thought about showing her some history about antisemitism but it seemed like she would just not hear about it.

Now I wonder if there was any way I could've handled this situation better