Kama has always been soft. It's just that now, she's even softer.
The game was already given away since Kama knew from that start that Nobutsuna was making cards to defeat her. However, she didn't pick them up or anything because Kama is incompetent and fucks around too much ("I knew Nobutsuna was betraying me, though I was surprised to find out he helped Tsubone escape. I knew he was making those cards and leaving them for you to find while he thought I was busy reading. I only kept him around because I was looking forward to seeing the look on his face when he found out all his work was for nothing. He wasn't suppose to actually succeed!").