Chapter 196 Spoilers !!
I was looking into the last panel of ch. 196 just now and it made me wonder:
What was Doll implying when she said she was going to "send them over to your hell"?
I'm no theorist expert, so please let me know if there's an error within my theory (there will definitely be some lol).
When I first thought of this, my mind went toward Sebastian and the servants.
It's been a long time since we've had more information on the event at the end of BoC and the recent chapters have barely given us any more details on what Sebastian had done to Doll, or if he said anything to her about the truth. All we have at the moment is Doll's vague dialogue with Finny and Snake in chapter 195:
Now, going on the basis that Sebastian and Ciel didn't have knowledge of bizarre dolls or any of Undertaker's antics at this time, we can assume that they wouldn't be so cautious of revealing the truth to Doll knowing Sebastian would kill her immediately after.
In chapter 193, the connection of Finny and Snake to O!Ciel was mistakenly revealed to Doll due to O!Ciel's alias in BoC.
Finny was of course a part of the murders of the circus troupe, but Snake wasn't. Once again, we don't know what Sebastian told Doll, or if he told anything at all, so for all we know Doll believes that Snake was a part of the murders as well and is also working with O!Ciel.
It wouldn't be unreasonable to assume that she would want revenge for what happened to the troupe, even going as far as to kill whoever is associated with it.
As of now we don't 100% know Undertaker's motive, but if we assume that he has no interest in keeping the servants (including Sebastian) alive, Doll will likely be interested in helping Undertaker in order to get her revenge. Although, we don't know if Doll has had any contact with Undertaker, and I have little evidence to support this part, so take this part lightly.
Now, it's completely possible that Doll is aware of Sebastian's true self before she was killed by him. She could also be aware that Sebastian is the epicenter of committing this tragedy, knowing how powerful of a being he is. With this information, Doll could be telling Sebastian she wants to send everyone who was a part of the troupe massacre to where he originates from.
This can explain why she specifically said "your Hell", since Sebastian is the only person Doll can know that confirms the existence of a hell, being his hell.
Of course, I have not mentioned the blood collection or much related to it. I simply wanted to assess this panel mainly using Doll's emotional and mental state, using evidence from her personal dialogue and experiences in the series. This will most likely put sinkholes into my theory, but I simply wanted to share a different perspective on Doll's consciousness and what her next moves may be going on into the current arc.
I would love to hear different perceptions of this panel from others, so please share them if you have any thoughts!!!