Hybrid eggs will most likely taste the same as a Guinea egg... and also be the same shape/size. If she free ranged for most of her diet I'm betting the eggs are delicious with rich ark almost orange yolks. I wouldn't eat the eggs she's been sitting on tho, if they are fertile they are probably partially developed at this point, ickI wonder if the mixes lay good eggs? If I toss the eggs and get rid of the nest If she would start to come home again at night.

And yes, your Hen should come home at nigth once her nest it destroyed. but like I said... she may start laying again somewhere else and eventually go broody on her new pile.