Although her heart was full of curiosity about the future, she didn't ask much. After spending a good while snuggling with Shen Sui, she wisely chose to return to her notes.
Vivian could have completely erased this Candlelight Illusion, but for some reason, she kept the illusion of her younger self, even if it might give Shen Sui a lot of blackmail material about her past.
Shen Sui probably could guess Vivian's thoughts.
Just as she used this illusion to help Alice fend off the Master of Thunder, and through this illusion allowed Alice to officially intervene in World No. 8, Vivian kept the illusion of her younger self more to protect Alice.
The Life Card Master-Soul Card system was originally established by Vivian, and she knew its weaknesses well. Leaving the illusion of her younger self was to fill the gap in Alice's security while Shen Sui was busy in the real world.
[You briefly described the situation of young Vivian to Isabella.]
