Or indeed give her the right to believe she's finished her answer or claim the 5th.

At the cost of completely disregarding what she's said. Anyone can say that everything is rubbish: it conveys no information. If someone says that A, B, C, D and E are rubbish, it tells us nothing unless they also say what they think isn't rubbish.

So, Catherine: either you're just a grumpy old misanthrope, in which case we can disregard everything you say, or else there's something specific that you do actually like, in which case pray tell.