Donnie enters his lab, wiping his face to express exhaustion. He takes off his battle shell, revealing his weakest point. He needs to relax but has to keep going for Shelldon's sake. He tries to wake him before they can begin repairs.

"Psst, Shelldon, it's time to get started. Wake up."

Shelldon comes off of his hibernation state and tries to look at Donnie.

"D-Dee, is that you?"

"Yeah, buddy, let us get you fixed up a bit before I have to get some rest. It has been a rather draining day for everyone..."

Donnie prepares his equipment before operating on Shelldon, taking his time with the preparation.

"H-how is Y-Y/N?"

"She...she is doing fine overall but..."

He pauses for a moment reflecting on everything that has happened.

"But what?"

"Well, she is medically going to pull through, thanks to yours truly but as far as our relationship goes..."

"Oh, I understand. That is a bummer. I guess Splinter got a bit ticked off huh?"

"'Ticked off' is a nice way to ease the blow in terminology standards but I would say he was very, very disappointed and angry with me."

"G-geez, TWO 'very'."

"Yeah, I was...frustrated, at Raph, Dad and even at Y/N. I never lost my composure so badly before, Shelldon."

Donnie gently picks up Shelldon and places him on his workbench, he begins to reassess the damage done to the propeller. He pulls out any lingering broken pieces with a small tong like instrument.

"I might just have to make you a new propeller from scratch Shelldon. I knew the damage was bad, but I did not know to this degree. I am so sorry I put you in the middle of all of this. All I have seem to be doing is messing up lately."

"D-dee, it is ok, don't beat yourself up about it. Y/N and I are fine and that is all that matters, right?"

Donnie nods while quietly continues to work. He feels more at peace while being able to focus on something else for the time being. However, he cannot help but think about Y/N and how he wishes he could be by her side again, just like at her home. He thinks about how he felt touching her bare skin while helping her into the bath, seeing her on top of him that morning, the kiss that they shared. He wants to feel her again, he wants to feel that intense sensation that almost drove him crazy before. A bead of sweat comes down his forehead as he blushes to himself.

"H-Hey, Donnie, you good? You NEVER sweat while working on something before, plus your face is color changing."

'HUSH SHELLDON, THANK YOU!"

Donnie yells out in embarrassment and tries to refocus on his work.

"You know, she did record a message for you, before everything happened. Do you...want to listen to it?"

Donnie pauses, he does not move for a solid minute as if he has shut down.

"I...no, please delete it Shelldon."

"Donnie, I really think you should hear-."

"I TOLD YOU...NO... delete. It."

They look at each other for a hard while before Shelldon caves to his demand.

"Fine...consider it done. I think that was a mistake though."

"Yes, well, I did not ask for your unsolicited insight. It is best that she and I move on, hearing that message would probably just ignite the flames again. We will just be good friends and there is nothing wrong with that."

"Right, keep trying to convince yourself. I read your bio-reading just now and pretty much every time you think about her, your body temperature rises. Among other things."

Donnie abruptly puts down his tools and walks away.

"Hey! Where are you going?! You still need to-"

"YOU ARE FIXED, I AM GOING FOR A WALK!"

Donnie walks away and out of view while Shelldon moves his new propeller and tries it out, flying around the lab. He sighs to himself while looking in the direction of where the disgruntled turtle exited. He projects his optics, showing Y/N standing and about to give her message from before. A prompt to delete the message comes up.

"You are going to regret this..."

Donnie stomped past his brothers' rooms', all dark and barely any noise besides light snoring. He notices the med bay light is still on and wonders if Y/N still awake, a part of him wants to check on her. The fact of the matter is, if she is asleep than SOMEONE has to turn the light off anyway. He slowly walks over and once he got closer; he could hear voices. He places himself against the wall so he can eavesdrop.

"I am sorry today was so rough on you, also about what you went through that night. That sounds horrible, here have a tissue."

"Thank you...I feel so mentally drained. I thought I had time to process everything but between my attacker, Donnie and well...ALL OF THIS...I have not had time for 'me'."

"That is a very perceptive insight with yourself. You need time to focus on you. Donatello clearly cares you and you care for him. However, you both need to be at your best to fully receive each other. He is a very special boy, like all of my sons. I know he will thrive with your continued friendship; you can bring a different perspective into his life. I apologize for coming off as cold, but the safety of my children is number one priority...even if I do tend to mix their names up from time to time."

They both laugh and continue conversing until Splinter yell out.

"PURPLE, it is rude to eavesdrop. Either come in or go to bed!"

Donnie lowers his head in shame as he walks inside the room, holding his arm.

"Come over here, my son."

He continues to walk over to the bed and sits opposite side of Splinter.

"It is good that you are still up, I can tell you both at the same time. I have decided to help train Y/N in our ways to help protect herself, just in case she finds herself in a situation like earlier."

"NO FREAKING WAY!" I exclaimed.

"Wait-WHAT?! BUT SENSEI SHE CAN'T-"

"Why not? Would you not want her to be protected? I would have figured you would approve?"

"It's just...I mean-!"

Y/N places her hands on top of Donnie's hoping it would calm him down.

"Donnie, I will be fine. This will be great! I could probably even train with April now!"

"Yeah...that is...great...?!"

Donnie jumps up unexpectantly and starts rambling about going to bed.

"It-has-been-a-long-day-so-I-am-just-going-to-retire-now-NIGHT!"

He takes off, leaving a very confused Y/N and Splinter behind. Donnie should be ecstatic with what just happened, but he also realized that is means they will be around each other more. He got excited only just thinking about her, seeing her every week is going to drive him crazy again...threatening to make him possibly break his promise.