Here we go!

Don's POV

"Come on, be brave", I sighed as Dani whimpered in fear of the needle I held to take a blood sample.

Dani shook her head, "I'm still in pain from the last shot I got."

I frowned, "One big difference- that was a poison injected by a madman. This is your big brother, who is desperately trying to save you, and I won't let anything stop me, not even you."

Dani looked at me, and timidly reached her arm out to me. I smiled and drew blood from her arm. I kissed her head, "I'll be right back, just rest, sweetie."

Leatherhead stood next to me as I reviewed the samples of Dani's blood I had taken. I managed a glance at my sister, who was lying on LH's lab bed; she was shaking, her teeth clenched together to keep from crying out in pain.

It physically hurt me to see her in so much pain and trying to hide it.

I sighed and called, "Leo!" My oldest brother basically flew into the room, "Yeah, Don?"

I pointed to Dani, "Watch her for me, will you? Maybe you can calm her down." Leo nodded and walked over to D, taking her hand and whispering gently and soothingly.

I turned back to the samples. From what I could tell, things weren't looking good. I growled lightly in frustration; Leatherhead, who knew me well enough by now to know I almost never growl, asked, "What is it, Donatello?"

I replied, "This accelerant is moving through her system at an alarmingly fast rate. I'm not sure how long we have to find a cure before her memory is affected."

I heard Leo gasp, "Don, we can't let her lose her memory!"

I nodded without looking up, "LH, I need you to use your super computer to help me determine an antidote. I need to see what compounds would counteract this." (Just role with it. I'm not good at science-techno crap. If you saw my math and science grades, you'd understand.)

Suddenly, I heard Dani mumble, "Leo, what's with that crocodile next to Don?"

LH and I spun around to see Dani sitting up, looking at my genius croc friend with curiosity and anxiety.

Leo calmly said, "Don't you remember LH, hon? He's our friend."

Dani shrugged, "Never met him." Leo and I looked at each other and groaned.

I turned to LH, who looked distraught, and I said, "Let's start that NOW."

As the two of us turned to his computer, a voice called, "Leonardo! Danielle!"

Master Splinter walked into the room with Raph and Mikey at his heels. Sensei saw his little girl on the bed and walked over to her, "How are you, my little one?"

Dani smiled, but Leo sighed and said, "Her memory is already starting to go." You could tell by the agony in Leo's voice that he was scared for his baby.

Master Splinter placed a hand on Leo's shoulder, and said to Dani, "Young one, do you remember what happened?"

Dani scrunched up her nose and said slowly, "I remember Shredder kidnapping me… then Raphie coming and saving me. Now Don is trying to stop this pain", she winced, "But I saw that crocodile, and when I asked who it was, Leo and Don looked upset that I didn't know."

She turned to Leo, "I'm sorry, am I in trouble?" Leo blinked, "Why the shell would you be, Dani?"

D looked down, "Because I ran away before, remember?"

Raph scratched his head, "Okay, I'm lost. Why is it she remembers stuff that happened recently, but she can't remember LH?"

I replied, standing next to LH as he furiously scanned Dani's blood, "I think the accelerant is taking her memory apart bit by bit. First she'll forget certain people, but eventually, she'll start to forget…"

Before I could finish my thought, Dani screamed. We all looked at our sister, who was staring at Mikey, and yelled, "Who the heck is he?"

Mikey's POV

As my sister stared at me in horror, I felt my heart breaking. My little sister… didn't know who I was?

I said slowly, "It's me, Mikey", I gave a weak laugh, "Don't you remember your favorite bro?"

Dani glared at me, and turned to Don, "Donnie, who is this?"

Don sighed, "Dani, it's Michelangelo. He's our youngest brother, remember? You two are partners in pranks."

Dani blinked up at me, "I've never seen him before."

Raph cussed and turned to Don, "You go get started on that cure. Like right now."

I left the room, and Leo followed me. When Leo saw the tears in my eyes, he hugged me and said, "We'll fix her, Mikey. Then she'll remember you."

I sniffed, "How long until she forgets all of you, too?"

For that, my oldest brother didn't have an answer.

Okay. 38 reviews, and I'll give you an update filled with drama.