My neutered male Marley died a couple of weeks ago which left my female Peaches on her own. She used to follow Marley everywhere and without him she just wouldn't come out her cage. So I thought getting her a new companion would be the right thing to do. I adopted a 2 year old sow and her 6 month old daughter. I've had them 1 week and been Letting them have floor time together every day but peaches my original 10 month old sow is really dominating the young one e.g.raised hair, yawning, biting, chasing, lots of teeth chattering.the baby squeals and obviously doesn't want to be dominant so I don't understand why Peaches is keeping on at her. I've been keeping them in 2x5 c&c cage with a barrier in the middle so they can see/smell but not fight. I just tried bathing them all and putting them all in the clean cage but peaches went for the baby so I put the barrier back in. I'm at my wits end here! Any advise? I only got Marley in January and Peaches in April so I am very new to all things guinea pigs!