She's probably fine at that height, especially landing on carpet. I don't worry about any fall under 3 feet.

I have a couple snakes that have decided it's too much work to figure out how to climb gracefully down from sofas and tabletops: My female pied is long enough to get her chin on the ground and then let her tail just flop down behind her. And my het pied male has decided it saves time to simply charge over the edge of everything.

I keep a close eye if they manage to climb over 4 feet or 5 feet off the ground, and I'll take them down if they make it higher than eye level. But they're just too naturally clutzy to worry about all the little falls.