Not certain of Nonna's small-print response in panel 2. It's pronounced "tankohvii shiryemu", and I've figured the first part is likely танковый ("tank/armored"), but my minimal knowledge of Russian and consequently weak Google-fu aren't up to figuring out the rest.

[Edit]: Figured it out.

Add a streak of blood from the teacher's nose and we're golden.

I don't quite get the joke on the first strip. Is the joke supposed to be Nonna thinking on breastfeeding Katyusha? I kind of see the punch line, but I don't get the deliver. I'm confused...