
Hi Yvonne,
Not having experience with your breed, not sure what they are like, but i experienced the same thing with my youngest girl who i also wanted to develop my lines with. My older bitch had her first season aged 5 months and with the yongest still no season at 12 months. She did however finally have her first at 16 months which is very late for my breed (happily now having her second). I like you was begining to think it would never happen and was considering going down the investigation route to see if there was a problem with her ( you could go down this route if neccassary ) .Let's hope it happens soon for you. Why is it always the way with these girls, they like to keep us on our toes i think.
P.s even now she is still very immature for her age compared with some in the breed, at 21months. It is a family joke that she will still be the baby even when she has pups of her own!!!!!!
Regards
Deb :)