Is my guinea pig ok i think she might be depressed what can i do for her?

I had two 6 year old guinea pig sisters. Hershey died two days ago.Hershey was more friendly then Kisses. Kisses is scared of people and shakes when you hold her. She seems very upset that her sister died. She ussually stays hiding in bed and Hershey used to sleep in the hay. Now Kisses is always in the hay and it seems like she is fighting with it. She lays there then all of the sudden she starts kicking and biting the hay holder. She also seems to be bleeding. On the blanket she sleeps on it was bloody the day Hershey died I thought it was from Hershey so i through out the blanket and put a new one. It was bloody again yesterday and today. What should I do to make her happy again. Its Sunday so I cant take her to the vet untill tommarow.



I forgot one detail Kisses is eating, but not drinking I tried force feeding, but it didn't work. She will eat lettuce, but I don't want to give her to much. She will sniff the water bottle but then she runs away.Is my guinea pig ok i think she might be depressed what can i do for her?
GET HER A MALE FRIEND(;Is my guinea pig ok i think she might be depressed what can i do for her?
Treats and love talk to her in a soft voice and toys.if she.likes to play and.possibly and.new freind i know its kinda hard and you may feel like your replacing her but maybe a new freind for her is thr best also maybe put a little something sweet in the water to encourage her drinking but the vet should know :)