Does anyone know about portal and portal 2? If you do, there are many hints that chell was there BEFORE the events of portal 1

1. listen to this
"Hello and, again, welcome to the Aperture Science computer-aided enrichment center."

Did you see something? Here it is one more time
"Hello and, again, welcome to the Aperture Science computer-aided enrichment center."
             ^*Clue*^

See???

2. Again, listen.

• "We hope your brief detention in the relaxation vault has been a pleasant one."
•                          ^* Clue *^
• "Your specimen has been processed and we are now ready to begin the test proper."
•                 ^*Clue*^

See, this proves it.

More clues later,

Me

• "I know things look bleak, but that crazy man down there was right. Let's not take these lemons! We are going to march right back upstairs and MAKE him put me back in my body!" | Download |  Play
• "And he'll probably kill us, because he's incredibly powerful and I have no plan." |  Download |  Play
• "Wow." |  Download |  Play
• "I'm not going to lie to you, the odds are a million to one. And that's with some generous rounding." |  Download |  Play
• "Still, though, let's get mad! If we're going to explode, let's at least explode with some dignity." |  Download |  Play

One minute ago. Less than one minute ago you solved this puzzle. Now you're having problems.

Hey, look at THAT thing! No, that other thing.

• "Oh... It's you." |  Download |  Play
• "It's been a long time. How have you been?" |  Download |  Play
• "I've been really busy being dead. You know, after you MURDERED ME." |  Download |  Play
• "Okay. Look. We both said a lot of things that you're going to regret. But I think we can put our differences behind us. For science. You monster." |  Download |  Play
• "I will say, though, that since you went to all the trouble of waking me up, you must really, really love to test." |  Download |  Play
• "I love it too. There's just one small thing we need to take care of first." |  Download |  Play