1) Voting, a person can voice their political opinions by voting in their country's elections. 2) Writing letters to your representatives in order to participate in government. 3) Signing a petition in order to voice your political and social ideals.
All of these options listed are ways to actively participate in a democracy.
Because they love the person still, think they can change and the person can and the person doesn't understand that they are in an abusive relationship so they don't know to leave