It depends on your question.. If asking like a Half Ghost/Half Human Hybrid, then No, this isn't Danny Phantom. But, rarely ghosts can actually possess there body, dead people in a Human Body. Therefore, called Half Human, Half Ghost.
no she didnt turn into a ghost
no
human
No, it never does.
the ghost possess you only because you disturb the ghost
Yes, in the anime "Full Moon wo Sagashite," Takuto does indeed turn into a ghost. He is a shinigami who takes on the form of a white cat named "Nachhi" for most of the series, but he can also manifest as a human with ghost-like qualities.
die
when PAC man eats the big cheese the ghost turn blue
No
i don't think its possible to be a ghost
You can't turn invisible, but if you are a Civil Security Ghost, you are invisible to the people who are not a ghost.