<human>: Summarize the given text in a few sentences.

Been dating about four weeks. She seemed mature when we met up, however after noticing many things, which is rapidly turning immature for me. 

One instance is: Twitter, I knew she had this and I try my best to respect peoples privacy but when you come across tweets angrily pointed at you (She happily posted them but didn't tell me anything that she was upset about). I don't know what to think.

Anyway, I know normally in all situations text message is the wrong way to tell people things. Which is why I don't want to take that route. However it's going to be difficult otherwise. Is sending a text at this stage okay?

I only get to see her, pretty much Friday for fifteen minutes and that's it. And should I tell her I found her Twitter feed?
<bot>: What is the best way for letting her know it's not going to work out? Phone/Text/Meetup?