Here is how Tegan Jovanka leaves the TARDIS crew in Pooh's adventures with Doctor Who: Resurrection of the Daleks.
Rabbit: So, you're certain that the duplicates are unstable, Doctor?
Doctor: Oh, yes. Yes, given time, they'll all be free of Dalek control.
Timon: May I suggest that we inform the authorities on Earth?
Pooh: Good idea, Timon. Let's go do that.
[Everyone begins to leave, except Tegan, who just stands there, looking shocked]
Pumbaa: Come on, Tegan, we're going now!
Spy: Yes. Let us move!
Tegan: I'm not coming with you.
[Everyone else comes back to her]
Tennessee: Hmm? What is it, Tegan?
Simba: What did you just say?
Moomin: You're not going with them anymore?
Tegan: I'm tired of it.
Blu: Is something bothering you?
Tegan: A lot of good people have died today. I think I'm sick of it.
Blu: Now, look, Tegan, none of us wanted it this way, now did we?
Tegan: No. It's just that I don't think I can go on.
Doctor: You want to stay on Earth?
Tegan: My Aunt Vanessa said, when I became an air stewardess, if you stop enjoying it, give it up.
Tegan: It's stopped being fun, Doctor! Goodbye. [Shakes the Doctor's hand, followed by everyone else's hands]
Piglet: If you're sure, OK, you stay here.
Tigger: I'll miss you, Tegan.
Rabbit: Yes, I will too.
Eeyore: It was nice knowing you, Tegan.
Tennessee: So long.
Chumley: Duh, bye, Tegan.
Simba: I'm glad I met you, Tegan.
Timon & Pumbaa: Remember Hakuna Matata.
Shy: Have a safe journey home.
Poky: Yeah, hope you'll be OK.
Tip: Don't forget us, the great adventurers!
Dash: Slash explorers!
Blu: It was nice to have met you, Tegan.
Jewel: Keep aging gracefully.
TF2 cast: Bye!
Turlough: Goodbye, Tegan.
Tegan: I'll miss you all. [Turns to leave, stepping over bodies as she does]
Doctor: No, no, don't leave, not like this!
Tegan: I must! I'm sorry! Goodbye. [Runs out of the warehouse in tears]
Snorkmaiden: We'd better go and make sure she's alright.
Moomin: Hope to see you all again later!
Jewel: OK, see you later!
[Moomin and Snorkmaiden go after Tegan]
Spy: Not our finest moment.
Doctor: It's strange. I left Gallifrey for similar reasons. I'd grown tired of their lifestyle. It seems I must mend my ways. Come along.
Blu: Don't worry about it, Doctor, I'm sure she'll be OK.
[Our heroes enter the TARDIS and it dematerializes. Moomin, Snorkmaiden and Tegan return]
Moomin: Thank you for saving us again, Doctor.
Snorkmaiden: I hope we meet again in better light.
Tegan: Brave heart, Tegan. Doctor, I will miss you.