What's there to justify? Here's what the timeline is:
(Early morning)
Rainbow sends AIDA out to find Miss M
Miss M finishes her conversation with Silverpine
A little while later, AIDA finds Miss M and brings her to the med bay
(hours pass)
Taylor wakes up Sandy, and that's the current scene.
Basically, there will be two concurrent scenes with Taylor; one in the early morning with Miss M, and one in the afternoon with Sandy.
Makes sense?