Can an IP address be traced from Twitter to a city?

[Teresa]

I was really good friends with this person on Twitter, but all of a sudden she stopped tweeting. She also stopped blogging on her Tumblr account. I don't want to assume the worst, but I miss her a lot and just want some closure.

It's a big hope, but what I want is to be able to track her IP address from a tweet down to a city. Then I'll search for any news about deaths in that city during the month she stopped logging online. Maybe she made it to the news.

I know it seems like I'm assuming things, but her last ever tweets were about suicide committed by a girl who was also on Twitter. I just want to make sure she's okay. Thanks for any helpful answers in advance.