😂 the Jacqui Weaver and the NYC Majorie comments
I've seen people do this in meetings time and time again, picking on one person to establish their superiority and hopefully gain followers who will join in and as PP say, they are encouraged to continue when no one else says anything. Although if people are on their phones as you say when she's doing it... they could just be hoping she'll shut up, but that's not very supportive.
From your examples, she is using a very standard technique - firing these questions out without giving you time to think and then interrupting your explanation with the next mean question. Then she's got you in a space where you end up trying to justify and explain yourself, which she can pull apart further.
It may feel like it, but its not rude to stop co-operating, like you would with a normal person. You don't have to politely answer her or give genuine answers.
I think it's useful to have a little list of stock responses up your sleeve, which you can snap back without thinking.
Channel your inner disrespectful teenager. Eye rolling, monosyllabic answers, deep sigh at any rude comments. The classic So What? plus Gallic Shrug. Karen Brady it.
"Why would you want to go there? "Because I just do."
What could you possibly find to do in New York for a whole month?"
"you want an actual list?" (emphasise the ridiculous.)
The one I found particularly useful with a mean relative was to exclaim
"Goodness. What a thing to say!" Easy to remember. I didn't have to answer them and it drew attention to them instead of me and it was hard for them to continue. Worked like a charm.
I also like @Fofftwenty21 and @RoseBuckets rip off the plaster advice. @potato57 has a good point too. Best of luck OP