Hi Sally and Shep - thank you.
Sally, to answer your question. I'm not 100%. In many ways her udder feels like mastitis - a little red, very very full, bit warm. However, I haven't come across mastitis where the teats are simply empty as hers are. Usually, I've been able to strip them out or at the very least, feel them blocked. She's just empty. I'll call with the Vet once I've done the school run in the morning. Don't have Oxytocin to give her tonight. Anything else I can do that you can think off? I hope it's as simple as her milk not dropping yet - she looks to be mothering the lamb well and it's desperate to suck from her.
Thanks