introducing chinchillas HELP PLEASE!

Hi, I have a question about introducing new chinchillas. I have a 3 year old female standard grey, I've had her since she was a month old, and just brought home a white female yesterday, because I work a lot and didn't want her to be lonely, as I've read chins prefer to be in pairs. I've been reading on how to introduce them, since their first meet was on neutral ground and they were fine, but as soon as I brought them home, my chin became very aggressive and tries to attack the new girl. No serious biting yet, but I pulled them apart before that could happen, my chin just jumps on the new one and pulls her fur out. So far, I've had the cage blocked off in between, one on top and one on bottom. Then today I let them out one at a time, so they could go back and sniff the other at their own pace, through the cage. I also switched them around, trying to get my girl used to the new girls scent, and have given them both a couple baths in the same dust. I ordered a new cage, so they'll have a clean slate and it's not anyone's territory. It should come in tomorrow, but I wonder if I should move them both into it right away, keeping them initially separated like I have them now? Or wait until they get along to move them to the new cage. Also, I'm worried if my girl sees me trying to bond with the new one, she'll get really upset. Right now, today since she's on the bottom section of the cage, she has been barking at me when I sit next to the cage, though she seems to calms slightly if I pet her and she isn't biting me. However, I'm also worried if I don't bond with the new one, she will never trust me, and maybe won't ever bond with my girl. I've also read putting cinnamon or vanilla on their noses sometimes helps to block their scents from each other. Is that a good idea? I'm worried I've already screwed up the process by putting them both in my girls cage on the first day, because I didn't have another cage and they seemed to be fine before we got home. My chin even chases the other when they're both out running free in my apartment. What should I do?