It looks as though the woman on the left is trying to make sure that her point was understood. The woman on the right doesn't want to think about it. What's behind them is more focused than they are. I take that as a visual metaphor for getting old. 9
Interesting expressions, has the woman on the right done something wrong as she looks as if she is being admonished by her friend. Focus could have been a touch tighter on the woman on the right, but I do like the composition of this