It's probably difficult to strike the right balance in the Axel scene (and the same applies for Seymour's scene), considering the heat of the moment element (at least from Lena's side) and the fact that it's exactly Axel's dominance Lena lusts for, but I'm not completely comfortable with how it's done now.
When Lena stops and asks Axel to wait, the "no space to run" part, how he physically restrains her, and how he then takes her lack of response as a yes, in combination feels too much. I don't think it would take that much to adjust it either. It would feel different simply by having Lena actively give her vocal approval, which could be as simple as a "yes", depending on what Axel says.
Considering their former sex life it would also make sense if they used to have a safeword. Random hypothetical scenario: Lena, when she at some point earlier in the story thinks about Axel, remembers how he made a point out of establishing a safeword at the start of their relationship (that would also make the part about Axel always treating her right more believable). Maybe Lena never even used it—not unlikely, considering how much she seems to enjoy her role in their dynamic. Then, as Axel walks up to her and grabs her, a simple reference to that would make the balance of the situation different: Axel saying "Just say the words, Lena, and I will stop", followed by Lena's inner monologue stating that he always said this, but that she never wanted him to stop—not now either. The sexual power dynamic between them would still be the same, it would just feel less brutal.
I think large parts of the scene is very well executed, but that one part at the beginning also negatively affects the atmosphere of the rest of scene, at least in my view.