Her Wikipedia page says she’s from Saitama (which is very close to Tokyo). What exactly were you referring to by her dialect?
Watching the video, she definitely speaks quickly, but I don’t hear anything in particular that is non-standard. But then again, I’m no expert on varieties of Japanese, so maybe there’s something specific I’m missing.
I agree that her Japanese sounds pretty typical. Perhaps it’s her speed or just her own speaking style that’s giving you trouble. I found it difficult to catch the end of some of her sentences as she lowers her voice and the sounds seem to run together with her laugh.