<human>: I just am at my wits end. I work in a small office room with just me and her. She talks constantly.  She honestly talks more in an hour or so than I do all day. And she's loud. When she isn't blabbering on the phone she's talking to someone she supervises (no, she isn't my boss) in person, and if that doesn't fail she tries to talk to me, and if all else fails she talks to herself (self narrating thoughts and actions).

I'm all for communication,  but I'm losing my mind here. I've been here for 4 years and I've tolerated it like an angel. I listen to music on my headphones, but then I can't hear my phone (it has an LED on it but I can't always see it shine when looking at my computer).

She also gets very defensive with her annoying antics. She has a habit of clicking her pen over and over while on the phone. So she's like "blah blah blah [click click] blah blah [click click click] blah blah blah [click]." I asked her to stop and she got maaaad. I also asked her to lower her voice when she was very loud on the phone (she could be heard down the hall) and she got mad.

She's a nice lady overall. She isn't a vile person, just an annoying person who gets defensive and has the temper of a 12 year old.

Can you summarize the given text in a few sentences?
<bot>: Coworker talks... a lot. Stuck in a small office with her and it's like I'm stuck in Guantanamo.