This sounds like a case of bad luck more than anything. Lae'zel has, in my experience, had no trouble hitting enemies, and there's always an alternative route to progress in the story. DnD is about flexible thinking, and finding alternative options when things (inevitably) go awry.
You're making my point for me. Negative die rolls soft lock the normal path a player would prefer to take. By the way, alternative options aare NOT exempt from negative die rolls soft locking those paths either.
If one path is locked by a negative roll, there's another. If that one is locked, there is another one. If that 3rd one is locked there is, yet again, another path. No matter how many times your dice may fail you, there is always a path forward in the game. Maybe it's not the one you would have preferred, but if you want the preferred option you'll have to save scum it. Either roll with the dice or save scum, the point of some paths being locked by a failed dice roll is that you can replay the game at some point and maybe you'll get a success on that dice roll this time around, and suddenly you can see a whole side of that encounter that you didn't get to before. The only really frustrating thing about having a lot of failed hits in combat is that you can't lock that offending dice away in the corner where it shall never be seen again like it deserves.
