Help! Bonding 2 females.

I have 2 female chinchillas. Lucy is about 2, and Chimichanga is about a year and a half old. Chimichanga came to me from a different home about 2 weeks ago. They are currently in 2 separate cages, next to each other. They've had some play time over the past couple weeks, the first time they were both very unsure, but smelled each other. There was some urine spraying, as i was expecting. Nothing major happened. They would touch noses, and then run away from each other. Today when they were together, there was much more chasing, and a lot more urine spraying. At one point they were both standing on their hind legs, looking like they were about to wrestle. I immediately separated them, and now they are each in their cages, peacefully sleeping after eating some hay and a dust bath. I am stumped on what to do, and not sure if they will bond, or if its a lost cause. I have a close friend who has wanted a chinchilla since she met Lucy, so she would be happy to take care of Chimichanga, is that a better option for both of them? I'm so discouraged. Help!



For reference: Lucy has a large critter nation cage with multiple levels, lots of toys and huts, and multiple granite slabs. Chimichanga has a fairly large cage, about 4 and a half feet tall. Hers also has multiple levels, with lots of hide-aways.