Routine
Life in the sewer settles into a routine. It goes like this:
Wake up and have a shower before the turtles can. It's actually easier than it seems, because Splinter always makes the turtles do a bit of training before things like showers and breakfast.
Have a quick breakfast before being escorted through the tunnels. Maybe it's to stop them from getting lost (which Taylor and April do not want to do), or maybe it's to make sure they don't fall into anything nasty.
Have an ordinary day at work. Taylor serves customers, puts on a polite expression when they're not satisfied or are being demanding, and secretly thinks about what her website might look like or what book covers she might design.
Have a quick talk with her mother while walking towards the rendesvous. There's no way she's going to call or Skype her while she's staying in the lair; Taylor uses the excuse that she needs to concentrate on her design in the evenings and it's not going to be forever, right? Luckily, her mom doesn't mind quick chats instead of lengthy ones.
Late afternoons are when the turtles have their fun and relaxation time. It can get...pretty loud, but that's OK. Taylor concentrates on her designs and Mikey's only too happy to give her feedback.
After eating, the turtles go out on patrol and keep an eye on things. That's when Taylor gets to relax. She'll watch TV or a film with April and Splinter, or just sit and read her Kindle.
But as April's investigation into the Purple Dragons goes on, Taylor finds herself learning card games from Splinter, asking Donnie what he's working on, offering to water Leo's bonsai trees, looking at what comics Mikey's ordered after he's done reading them and being in the same room as Raph without feeling sick.
It starts to feel...normal.