Free speech and all that.
FWR is always (correctly) saying that no one should receive threats or be the target of abusive behaviour etc for their GC views.
Why are this woman's views less worthy?
And before you come with the 'but no one should celebrate death' angle, would you have the same feelings towards someone opening a bottle of champagne to celebrate Putin if he were to die? Or is it just the deaths of people you like who are off limits?