Okay, so this is not another chapter. Weeeelllll, technically it is, since Fanfiction says it is, but there's no actual plot. Weeeellll, there is plot if you got confused by the last chapter and stopped reading halfway through, but that would be silly. No, this is an explanation of what the hell happened last chapter, since it's weird and strange and doesn't make too much sense.
Alrighty, so when the TARDIS starts following the subwave signal, everything lights on fire for a bit, which if you've seen the episode recently you know. However, happy fire and sad fire isn't just Rose going crazy, it's different occasions (happy fire=bonfire/celebration, sad fire=death, destruction, despair, all those lovely D words that go along with explosions and whatnot).
Nextly (is that a word? No? Well it should be) Jack and Sarah Jane and Martha appear on the screen and start talking to the Doctor. They're the strangers that she starts freaking out about. Now normally Rose is okay with being around people, but normally those people aren't in the TARDIS, which is her safe place for just her and the Doctor and Donna (aka the nice lady, see what I did there? I swear, every time I can't figure out what to call Donna I always end up referencing the library episodes). Also, she doesn't realize that they're all on a screen, not actually in the TARDIS, because she's still more than a bit crazy and doesn't recognize/remember that things like video chats exist. She starts to think that these strangers are just like the people who first took her away from the Doctor and made her insane (see chapter 4) and that just makes things worse.
When Jack and Sarah Jane see this, they get confused because they don't know that Rose isn't in her right mind. "The one that reminds her of something or nothing or two things that are exactly same but completely different" is Jack because she remembers him from when he traveled with her and Nine, but she also remembers him from when he took care of her starting in chapter 7 and since she still can't think straight she isn't able to connect the two memories. "The older one that she remembers like a dream with the younger one that she's never seen before" is Sarah Jane with Luke. Rose still can't quite access her memories from before she went insane (all this "before" and "after" stuff is so annoying to rephrase…I'll stop complaining now), so everything's still fuzzy, like a dream, and since she never met Luke, "the younger one" that confuses her even more.
Then the Doctor comforts her and Davros starts interfering with the signal and Donna starts treating her like a kid and shushing her and hugging her (you know what I mean, right? When a kid gets hurt and starts sobbing and someone picks them up and hugs them and starts going "shh, shhh, it's okay…"). Of course, Davros being the scary a-*runs and checks the rating of the fic* K+, better not take a chance—Davros being the very very frightening man that he is, she freaks out some more, realizes that the Doctor is freaking out too, and figures out that he needs her and Donna's help. And they hug him and do more of the sushing and hugging thing mentioned before.
So yeah, that's chapter 19 explained for you. If you didn't need any of this and I've just been making a fool out of myself, that's great! If you basically understood what was going on but this clarified a few things for you, even better (I don't like feeling like an idiot…I don't know, maybe it's just me). If you didn't even try to read the chapter but decided to completely skip it for whatever reason and read this, then GO BACK AND READ IT MISTER/MISSY/FORMAL PRONOUN OF AMBIGUOUS GENDER I would appreciate if you would read the previous chapter since I did work hard to write it and I would prefer if you didn't ignore it.
Yeah…I'm bad at writing endings…I'm even worse when there's no story to write them for…I'm just gonna…go now…bye!