cough cough - er sheep lamb not kid
you obviously spend too much time with goats
Your Soay has reached a fine old age but she is not necessarily about to die. We have several ancient biddies, Soay, Hebridean and Shetland. The Soays in particular seem to look half dead for ages, like wobbly old toast racks but they continue to be full of life, cheek and fun.
We have an old Heb at the moment who is 17 and has gone off her food. She has been in top condition for the last few years since we stopped breeding her, but suddenly refused to eat although she clearly wanted to. We checked her mouth - we knew her front teeth had gone long ago, but find now that her bottom molars have also gone. We have given her liquid molasses in case this is just a short time of sore gums after another tooth came out, but if she doesn't start eating again soon that will be the end.
It could be with your Soay that one of her molars is coming loose, in which case it will interfere with her chewing at the moment but once it's out she will be fine again. On the other hand Soays are not as long lived as Hebs so it could be that she is on her way out. If she seems content then let her carry on, but if she appears to be in pain
it could be time to call the knacker.