{{{Susan}}} FWIW from a non-parent, I don't think that development testing is ever a bad idea. Better to catch issues early and deal with them, although I seriously doubt that there is going to be any serious development issues for Annabel. If you decide to go through with it I hope that you find that it brings you some peace of mind and you can let go of some of your concerns.
This damp summer weather must stop. I am sick of just crying for no reason because everything hurts so damn much.