S.H.
1) Kids this age cannot talk yet, like adults. They do not have the vocabulary etc.
2) Kids this age, do not even have fully developed emotions yet either.
3) Kids this age do not have, any coping-skills for their emotions.
4) Kids this age do not even know, the names for feelings or what they are feeling nor why.
5) Give it time. She is so young. Redirect her or distract her. Over time, a child will learn. But it is not overnight. A kid this age does not even have fully developed deductive or inductive reasoning.
So, whatever method you try, keep expectations and "lessons"... age-appropriate.
Otherwise the child and then the parent will always be frustrated.
6) Also, kids this age, do not even have fully developed Impulse-Control yet either.
At this age, redirection and distraction is usually used. And use the tone of your voice coupled with facial expressions, to "convey" what you mean. Kids this age, cannot "read" a person's facial expressions accurately yet, nor know exactly what it means.
Beyond "telling" her your disapproval.... teach her coping-skills. Alternate ways to express frustration. That is what she is, frustrated.
Toddlers tend to get frustrated, because, they cannot yet do what they have in their heads. Their mind and physical coordination is not there yet. ie: they may think they understand how to bounce/dribble a ball, but may not be able to ACTUALLY do it.