I quite liked the episode in general. There’s some great character development and the relationship between Donna and the Doctor is just brilliant. There’s a deleted scene where Donna says “We remember” or something along the lines of that, which I wish would’ve been kept in. And Martha’s off, doing her own thing, saving the Hath, which is great.
We learn more about the Doctor’s family, and his feelings regarding that, which I personally love because we don’t get to hear about that often. DT plays it beautifully. He’s hurt and he can’t let Jenny in because that would mean he would be a father again and he can’t quite handle that. But, of course, because of some help of his companion, the Doctor accepts her because, well, he’s the Doctor.
The end is my favorite too, when Jenny dies. Obviously she couldn’t stay. I could tell from the beginning, and especially after he accepted her because the Doctor just can’t have nice things. The line “I never would” is perfect. The first time I watched, I flippped shit because I thought he was actually using the gun and that goes against every principle that he’s developed through his Ninth and Tenth regenerations.
Jenny coming back to life is fine, but it wasn’t necessary imo. It’s great that she lived, but I don’t really expect the Doctor to ever find out that she’s still alive.
I have some specific theories about Jenny being Rose’s daughter too, which I can explain if you like, but there’s another reason I like the episode.
Plus Donna’s sass is at all time high. And so’s her kindness.