But the one guinea oig a alone :/ A rabbit is not a guinea pig.. and a Guinea pig is not a rabbit.. it's a mistake to keep one guinea pig + one rabbit or rabbits + one guinea pig 
I know, it says that you should not keep guinea pigs alone. But my father has banned more. :/ But she always gets visit from guinea pigs. She is completely healthy. She has lived for 7 years with rabbits. Do not worry. 