Mandee, welcome to YT its nice to have u here...
i just want to let u know im in the same boat lol, Chelsey is 5 months and Chanel is now 8 weeks, shes been with us for 1 week and the first few days Chelsey acted like a spoiled snobbish brat, she wouldnt have anything to do with her, shes starting to be nice to her now and i keep telling her to play/fight GENTLE... she doesnt like to share her toys with her yet, and she takes everything away from Chanel that shes playing with, but i just try and take it as it comes, it looks nasty when shes acting mean, but Chanel is starting to stand her ground now although she is only very tiny at just over 10oz, i put them together while they sleeping on the couch so they can learn that laying together can be cozy lol
Good luck and know ur not alone on this, we are all here to help