Enquanto Catherine Sakai nunca mais apareceu no programa, ela era uma personagem principal do romance canônico 100% Sonhar na Cidade das Dores por Kathryn Drennan (que na época de sua publicação era a esposa de JMS). É bem escrito e lança muita luz nas histórias de Sinclair, Catherine e até Marcus Cole e eu recomendamos vivamente. Mas se você concorda com os spoilers, aqui está a versão curta:
Catherine left Babylon 5 after the start of 2259 on an extended survey on the rim and narrowly escaped an attack by a Shadow vessel. After returning to Babylon 5 and discovering that Sinclair was transferred (being pretty much the last person to know), she met him on Minbar and decided that despite his Ranger duties, she still wanted to marry him, and even joined the Rangers. Months later, the Shadows tried to artificially open up a time rift in Sector 14 (the Babylon 4 sector) to send a ship back in time and change the outcome of the first Shadow War. Sinclair, Marcus, and Catherine prevented this, but Catherine got dragged into the time rift before it closed, going to who knows where (or when). Sinclair was distraught over her loss, but when he asked Kosh if he would meet Catherine again, he replied, "Perhaps".
Em seguida, no epílogo, definido após Guerra sem fim:
Marcus received a cryptic letter written on old paper saying, "From both of us, our thanks and friendship. Continue to dream that better future . . . where perhaps we'll meet again."
Havia também uma minissérie cômica de três edições chamada Em nome de Valen, escrito pelo próprio JMS.
In 2261, the Babylon 5 crew discover the remains of Babylon 4. On board, Delenn listens to the audio journal of Valen (Sinclair), with this final entry: "And as for me... I've received my own reward, because I've found her. At long last... I've found... her."
Entre esses dois, especialmente considerando o epílogo do romance, parece que, em última análise ...
Catherine was sent to a time and place close to where Babylon 4 appeared, and Sinclair did end up finding her. A happy ending, but they sure had to go through hell to get it!
Como Allen Gould aponta nos comentários, isso lança uma nova luz sobre os filhos de Valen que precisam fugir de Minbar após sua morte. Veja a resposta vinculada em Por que os primeiros filhos / descendentes de Valen foram perseguidos?