Trixie kept on acting as the caregiver for Mitzi, her sister, until they grew up, when a funny thing happened. Mitzi grew bigger than her, and Trixie stayed a bit smaller and thinner. She was always very devoted to us, and even when we disciplined her for doing something she shouldn't have done, she wouldn't run away. She'd go sit in a corner for a bit, then forget all about it and come sit near us again.
Along the way, we had a few close calls, when we thought she might die. It looks like she was either poisoned or ate some poison at a neighbor's place. Twice we found her shaking horribly, unable to walk or stand, eyes terribly dilated. Thankfully, she pulled through okay, with the help of diuretics to flush out the poison, and grass juice, which turned out to be a miracle cure for her. We'd quickly blend some fresh grass from the yard into a green paste, mix it with water, and use a syringe to administer it orally. Within minutes, she'd feel better. We'd repeat the treatment three times a day for the next couple days or so. Keep that in mind in case your kitty is ever poisoned.
Trixie now lives with my grandmother in the countryside of Romania, together with her sister, and loves supplementing her diet with mice and the occasional eggs she steals from the chicken coop. :-)