Answer:
Mello captures Takada and basically strips her naked to see if any pieces of the Death Note were on her. Takada had a piece of paper that was from the Death Note, and took it out as her back was faced to Mello (It was in her Bra). After Mello saw everything was off, he drove away with Takada in a truck. Takada sits in the back of the truck,panicks, and decides to write his name down in the piece of paper from the notebook. He then dies.