"Who Am I?" is a fun one for any age. You write down the names of famous people (living or dead), cartoon characters, or other "characters" from pop culture, and you tape a name to the back of each lady. Then the ladies all mingle asking only yes or no questions until they figure out the name on their back. Encourage them to ask things like, "Am I still alive?" "Was I on television?" "Was I a politician?" "Was I a cartoon character?" You get the idea. When a lady figures out who she is, she still mills about the room helping other ladies figure out who they are. If you don't want to come up with the names, have each lady write down a character and put it in a bowl and then you walk around putting the names on people's backs.
If you wanted to be REALLY creative with this, you could make the things on people's backs garden-related, such as particular types of plants, or particular types of implements used in the garden, but the people one is much more challenging.
I was a Youth Minister and Christian Educator for 11 years and have led numerous retreats, so after the ladies here on this board give you their great ideas, if you still need more, please feel free to send me a message. Good luck and have a great time with the ladies!