After a few minutes of wandering around in my bedroom, I decided that Daisy should be in TEA2 and should have a different route from Tweety and Puffy.

Now, what I'm thinking is: Tweety and Puffy's routes (which are the same) will have 6 levels (including the inside and outside of Merlin's castle). Daisy's route may have 7 levels. See the level sheet I've provided below.

For context, the extended sewer level will lead into Merlin's castle chambers via. a pathway which won't include a boss.