I think it is more than that.
1. The fitness training with Jez allows Laura to stay in the rally longer
2. Her new coach is giving her wise advice on when to be patient and when to pull the trigger when the odds are more in her favour.
I think the new higher level is here to stay. You don't beat 3 top 10 players in a week running on pure confidence. She is no Rosol.
I agree completely. Laura has had potential since she won junior Wimbledon at 14. It was obvious then that with better movement she was going to be one heck of a player.
Of course, Laura still has room for improvement. Her first serve could probably be better. She reminds me of Andy in that sense, when her first serve goes in it is a good weapon, but it can break down when she needs it. Her movement could also be better still, but she is going the right way about it now.
Heather is going to be fantastic too, without a doubt. I do wonder if her height might be a problem for her, and she does need some bigger shots, but I'm sure it will come.
I think these two are lucky in the sense that they have each other to compete with. Chasing one abother up the rankings will be good for them both.