On the one hand, I can generally understand not wanting to jump straight to business. On the other hand, Anri has an awfully familiar backstory: she spent a lot of her childhood in the hospital with a chronic illness, her only friend was a meguca, and she made her Wish in response to said friend "dying." If it was Homura in that cell trying to dewitch the Grief Seed she got from Kriemhild Gretchen, I doubt she'd react well if we tried to talk to her about anything not Madoka-related, especially something as "unimportant" as her own well-being. And as unlikely as it may sound, I'm pretty sure Homura has better self-esteem than Anri. I mean, one Wished to become a better version of herself, and the other Wished to stop being herself altogether.