Yes she is able to do so. However, the laws of Shariah should not be violated in the process. This includes no public speaking in front of na mahram men, no free mixing, always observing hijab and niqab, no unnecessary interaction with na mahram men and so forth. If interactions between her and a na mahram are inevitable, then she should communicate via a mahram. As a Muslim woman, she should always practice humbleness and modesty when trying to get her opinions heard by others. She should not be like the western feminists who are always seeking equality between the two sexes. We should bear in mind that Allah's religion is not about equality but how just it is indeed for both men and women.
