If she likes the milk - definitely let her have some.
She may also just be a bit worn out...
My girl with her big udder and hypocalcaemia kidded fine with triplets and is milking 5.5kgs now at 8 weeks post-kidding. Pleased with her, as she is a BT x GG, so not a huge goat by any means. However her ligaments have become very slack, meaning that she will not be able to kid again... quite sad about it as she is only 3... she is eating well and happy in herself, but her shoulders stick up (she has a hump) and her hind pasterns are completely loose, so she walks quite funny. Vet is quite surprised by it, hasn't seen it before, but I have heard from other goatkeepers that it happens occasionally. So we will see how it goes over summer...