Bismillah, 

Both women and men should perform ghusl al-janabah after penetrative sexual intercourse (also inclduing anal intercourse). 
 

Also if a woman has an orgasm or climax without sexual intercourse, then the ghusl al-janabah should be performed. It's worth noting that this type of ghusl would make one in the state of wudu so one could perform Salah after the ghusl without doing wudu again. 
 

if a woman is aroused causing some fluid or discharge, this wouldn't make ghusl al janabah obligatiory unless she reached climax. 
 

May Allah Grant You success