So. i have a question?

Im not sure if this is the right place to do this or not but i cant seem to find anywhere else that would be better. So. I have been playing alot recently and i really like her, but it seems like trying to fight a is annoying because of his stun. i ult in on him and he drops his stun i run through it slam him and then am just sitting at him stunned. i thought her ult made her invincible to crowd controls?