Always grabbing and wanting mama

One more thing I don’t get about my little girl.
When I’m around, she’s all about getting ready to go on the potty, and she wants Mama to watch. Then she wants to sit on the potty until I change her diaper, and only then does she start walking... And yesterday I had to go to the hospital for a check-up, and (step)dad stayed home with her when I left. She was screaming, crying, and then screaming again. After that, she sent an SMS saying how things were going: "She’s comfortably sitting on my lap in the armchair, looking at her book... Barely any noise comes out." I was relieved, of course... When I got back home, she jumped out of the armchair as soon as she saw me, almost yelling, "Mama, take me!" And then it started all over again: "Pee potty, poop, Mama, come..." Her friend said she had barely said 10 things to him... How does that happen?