Hi all
I'm an Australian Group Leader who has just joined the forum. Without daring to try to tell you how you should do things, let me just tell you what happens here.
Bringing girls into Scouting began here with our Rover Scout Section (18-25 year olds) 35 years ago and has been part of all levels of Scouting now for about 15 years. So far as I can see it has been totally successful. No-one inside Scouting questions the change now. Sometimes I still encounter outsiders who ask with surprise "Oh, you have girls in Scouts now?" but it almost always evokes a positive reaction.
If anything, it has helped eliminate the old, unfortunate paedophilia image Scouting had in some circles, and no, there hasn't been an outbreak of unwanted pregnancies.
Girl Guides (like Girl Scouts in the USA) still exists, which seems a bit of an anomaly to me. We joke that girls now have a choice but boys don't!