Congratulations with your first garter !!
I think it's ok to start handle her after a week. Normaly baby garters don't mind the transport much. But like Snaky already said, s.s. florida blue have quite a temperament, and I think it's very hard to tame them
We have ours for 1,5 year and they're still jumping around even if I only stand in front of their enclosure. But I guess that makes them so special
. They are gorgeous garters and I'm sure you will have a lot of fun with her.