Would've gotten a bunch between age 10 and 16 or 17, I think. Up to 23 would also be plausible, if a bit more sparse. Got more from when she was about 25 or 26 to 27 after Naruto was born, so for those she would've been carrying him around. This option is mostly open in case anyone wants to have had her and whatever team she was with got assigned to babysitting duty for your character. Or if you want your character to see her at some point mid-mission? UNLESS SOMEONE WANTS TO DRAG OUT AN NPC FOR SOMETHING??? I dunno, let's roll with things.

Occasional D-ranks to help rebuild Uzushio between administrative-type work starting BGS 5 (age ~34).