Mal either died or kicked up a level. She used the top as a totem, not Cobb, and multiple people knew the properties of it. The top could not measure dream or

Mal either died or kicked up a level. She used the top as a totem, not Cobb, and multiple people knew the properties of it. The top could not measure dream or reality while in Cobb's possession. His own dreams would render that totem useless.