Welcome to our forum.
In the Coleman line there are two that come to mind, the 104 and the 351 are both low profile spas. Both are 29" tall.
I wouldn't be limiting myself to spas that are 30" or less. My wife is 5'2" (rounding up) so I know what you mean but you can go a lot deeper and still be comfortable IMO (it's not as if you're Mini-Me). I think you'd be fine in spas that are 34" for instance (unless you're all legs and a short torso).
Any recommendations for a spa for those of us that are height-challenged?? I'm 5'3" and am having a hard time finding a comfortable spa.TIA!!