Help needed, my Mom was put in prison for protesting in Beijing

Just got email from my cousin. My mother and my aunts were put in prison for protesting near Zhongnanhai. Their private house left by my grandpa, located in Beijing Qianmen area, is pulled down forcely...I don't know much details since cannot reach my cousin by phone. Are there anyone heared the similar case? Any suggestions? I am worried so much now!!! Many thanks!