Hi Polyanya. I am hoping very much that there is a reason why he’s doing this but if not I think he’s probably going to go that way. The only problem is that, at the moment there are only 2 of them and if one goes . . . I am looking for some Golden Guernsey does but so far have been unsuccessful. What is better? A bullied goat who occasionally fights her corner or or lonely doe?
I do not know where in the country you are, but over the summer there will be kids and other youngstock for sake - best bet would be to either look on preloved (with the caveat that any animals purchased there may not be registered and pure bred GG's, but GG type) or join the Golden Guernsey Goat society and get registered stock.
An 8 yo old female that comes into season at this time of year, and if she does this weekly, I would be inclined to think she has developed uterine cysts, which messes up her hormones, and she would not hold to any mating. Not much you can do about it, a breeder would cull her as she would be driving the resident males (and possibly the human neighbours as well as the breeder) mad with incessant shouting.
Also if you are thinking of getting new stock in, I would only introduce kids at this stage - this way the old girl can be herd queen for a wee bit longer, but she will eventually be forced to let one of the younger ones take that role. My original GG girl lost her position around the age of 6 (to a much bigger and a year younger BT type female, that arrived at the same time as the GG), but the GG girl would not stop fighting and end up with a bloody head all the time - only solution was her own pen and also just going out to graze with the youngstock (separate fields for milkers and youngstock plus Ella), this way she was happy for a few more years. I suspect that is what is going on with your girl.