Not necessarily. There is no proof that Rumia visited Candy other than Candy claiming so. There is also no indication that Rumia does visit someone of their choice, or even anyone at all. Furthermore, even if they did visit Candy, there is no definitive proof that the target will be alerted of it.
But then again, I have no idea how the ability works other than that it doesn't do anything, nor do I know if Rumia is based off another role that works exactly like it.
Overall? I don't see any reason why someone would lie about it. But you know? Some food for thought and anything can happen.
Anyway, next off we can talk about Superjolt. Were they targeted at random or were they specifically targeted?
If you think they were targeted specifically, who would you think is most likely to want them dead off the bat?
Personally? I feel like it was a random attack. There is next to nothing to go off of, so I can't find any logical reason someone would have a reason to attack them outside of randomly selecting them.
Finally, we have that unknown attribute spell to take into consideration.
Unless I missed something, Kaneki stated off the bat that it was some type of silence attribute when there is no definitive proof of it. I find this a bit off, considering that their next post they mention it again but, in a term of "I bet it is" rather than them seemingly knowing on their previous post.
Anyway, I feel like the best way to proceed is just discuss things, anything that anyone thinks could be of importance. Someone will likely slip up somewhere and as we get those new leads, we'll progress.