My precious piggy, Aggie, has stopped eating hay almost entirely since her cage-mate passed away (which was in late December, but I'm getting her a new friend soon). She'll eat pellets and will devour veggies like a champ, but I don't know what to do about the hay thing. I've even tried giving her other brands and other types of hay (I feed Oxbow timothy hay) but nothing works. She's also recently started drinking a LOT of water. She'll drink an entire 32 oz. water bottle's worth of water every day! Is she sick? Please help!