Yeah it's frustrating in the beginning.
It was no different for us when we started. Hell i can still remember when i first started playing shooters with the dual analog controller. Really frustrating. Mostly because the controller isn't suited for that at all (hence why it's so slow and why there is aim assist on consoles) but it's also something to get used to. Some people get there faster than others, but we'll get there.
I was glad with the Wii and the PS move controllers. They were much more immersive and user friendly.
Explain to me why you wrote:"Maybe I should have forced her to practice more."
You think i'm some sort of drill sergeant to my kid or something?
Just have patience with her and she'll be fine. Maybe start out with a game that's easier for a 3 or 4 year old.
Can't I just let her enjoy what she wants to play now? Then she can choose if she wants a more difficult mode later?
If she had a deep down gamer drive, like I did when I got my first NES at 7, then yeah maybe she could pick it up super fast. (though I remember specifically renting Konami games so I could cheat code my way through them at that age). Maybe she will be that type of serious gamer in the future. But right now, today, she wants to: "Be the pink girl in the rainbow space one. And daddy is the turtle!".
I don't see how that is hurting anyone.