I think that Red john has hypnotize Lisbon .He makes her an accomplice with him and a spy for him . Three people in the list have met Lisbon privately which they are :
1- Gale Bertram
2- Bob Kirkland
3-Ray Haffner
and we know Red John is probably has an ability to hypnotize . He can make people to be in his side easily .
I feel that Ray Haffner is Red John , he met Lisbon privately lots of times and he offered her to join him in his own new company
Moreover, He is a member in Visualize as it is revealed in episode 13 in season 5!
But this doesn't mean that Lisbon is bad person , because she has been hypnotized. Look at episode 18 in season 1 when a women has hypnotized Rigbsy . He was like an evil he could killed Jane but then Jane him to recover and back to his nature personality!
Sorry for my english:)