One more thing... it's not necessarily a bad thing that she's out with another divorced woman who may be a "bad influence." That entire scene might be exciting at first, but in time it gets really old. I think it's better a WAS (or ex-spouse) they don't come back until they are really tired of it. There will always be opportunity and influences. If not this friend than another....
Just plan to see her another time and wish her well ... and do something special with the kids.... or friends!!!
There is no arriving, ever. It is all a continual becoming.