Guinea pig bully

Question
Hi I have 4 female Guinea pigs that live in 2 seperate cages, 2 are 3 year old and 2 are around 4 month old. I brought clover home first to live with my 2 adult pigs, she is a tiny little pig and jumped all over my older pigs which they got sick of quick so I decided to separate her and get her a friend closer to her age. I then brought home Ginger who is a bit bigger than clover, the pet shop said Ginger had not been separated from her brother soon enough and came to the shop pregnant, by the time I got Ginger she had already had her baby, it was sold and she was on her own. I spent a while intoducing clover and Ginger and they played well together but when in cage together Ginger tried to go for Clover who I removed immediately as she is very small, so I started over again and eventually they got used to each other. They have now been together for about 3 weeks and I am concerned Clover is being bullied, Clover runs away every time Ginger tries to touch her like she is scared, although they do sleep side by side (not cuddly like my older pigs). Clover squeals at times like she is being hurt but I have never seen Ginger attack Clover(I have watched them alot)and Clover has no marks on her at all.
I think Ginger is very dominant as she tries it on with my older pigs during floor time but does not get very far as they are a lot bigger than her and she never actully fights I think she is maybe all talk, do you think i should consider separating Clover and Ginger for Clovers sake? They run around the cage fine together sometimes and clover eats well Ginger does not seem to try to stop her, however if they are eating together and Ginger so much as looks at Clover, Clover squeals and runs away, Ginger makes the odd lunge sometimes but only in a playful manor Clover reacts like she is being tortured! what do you think? should I be concerned? Looking forward to hearing from you Lol

Answer
Hello,
Since Clover is always making a squealing noise (As if she is being hurt) then I suggest you look her over to check she is all healthy. If she is all fine then seeing as they are not hurting eachother I think you should leave them together, guinea pigs get very lonely when they are by themselves. For Clover's safety in their cage you could place a little bolt hole that he can get into but Ginger cannot get into (such as 2 bricks with another brick over them.) Maybe Clover needs time to get used to Ginger. You could put some new toys into their cage so they can play with them together, or hide pieces of vegetables/treats around the cage so they are entertained and soon get used to eachother.
If Ginger shows any signs of attacking or hurting Clover then I do suggest you separate them but make sure they can still see and talk to eachother through bars of a cage.
Sorry I couldn't be of more help
Aleksandra