My daughter is 20 months old. I am sure she would be able to recognize an H&S formation much the same way she is able to recognize a monkey, a zebra or an apple. (She is also able to recognize numbers, letters and selected words, but that are more advanced tasks.)
You have to ask yourself whether it is reasonable to assume the former skill is enough to outperform the market given e.g. the fiercely defended claim of financial academia that any skill is futile in that endeavor?

That will depend on how she manages her losses.
That comes with maturity. Give her a little time.I will admit she does not seem to manage losses very well...