Kirsten, Congratulations on bringing Lily home.

This is normal behavior, I do agree with others that if you can seperate Luna and Lily for awhile that will be a little less stressful for Luna. All of my furkids still growl and hiss at each other on occasion, Luna and Lily will have to establish their "pecking order" but eventually they will co-exist with each other, just have patience and stop worrying.

Congrats again.

Meg