it's pretty much the only interaction he and his mom have in the novels.
As the kyuubi attack was going on, he (while he's carrying sasuke) and his mom relocate each other. They're both worried and they hug. During their reunion amidst the chaos, a boulder comes hurling at them. 5 yr old itachi hands baby sasuke over to his mom, jumps into the air, and smashes the boulder (which was large enough that if it landed it would have completely crushed all of them) with chakra enhanced strength (yes, he had that at such a young age). His mother appreciates this skill as she's a jounin herself and praises her son by saying she takes after fugaku (lmao).
Then, itachi grabs his mom's hand with the hand he's not using to hold sasuke and guides her to safety. I'll pm you the excerpt now.
