less eating of a guinea pig

Question
hi,i have a pair of female guinea pigs.at first Ginger used to be  more active than Spice and also they used to fight for dominence.earlier Ginger dominated nut now Spice is dominating.Ginger has lost her activeness and is frozen to a corner.also she eates less.sometimes Ginger eates Spices food.whats the reason behind Spices laziness?also i feel Spice is a bit sad bcuz at first when we used to give them food.they would squek and get excited but now only Ginger gets excited and Spice is at the corner.she eates very less than she used to.whats the reason please help!

Answer
The most likly thing is bullying, best cure is more living space with hiding places. if two people live in a tiny room then they would fall out, give them a big house and they wont. if this is not possible then keep an eye on her weight, if she keeps losing it then you may need to seperate them.
best of luck.