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.

preference is a small part of D&D sadly, much of what you do is based on the luck of the die. Get lucky on the die roll can do the preferred path, not so lucky, time to think and find another way. Yeah it soft locks but thats D&D, at times the fails end up being another story in and of themselves. In pnp games they tend to be funnier. Like my groups wizard who didn't even bother to try and roll insight, ended up in a cage, and losing his spellbook. Would he have preferred not to do that I'm sure he would have, is he going to be picked on mercilessly about it at the table, and irl. OOOOH YEAAAH!
Then there is my fighter cleric who couldn't hit the broad side of the barn if someone threw her into it. Which is going to end up with her being again mercilessly picked on about at table, and irl. Would she prefer it not to be so, you bet. Is it 100x funnier the way it happened yes, yes it is.
Same goes in video games. Me and my gaming buddy still give each other shit for our stupid mistakes, even when we would of preferred them to not have happened.
Case in point walking around minding our own business. I happened to look back as I was behind him in time to see my screen fill up with a dragons head coming out of the dark. I screamed like a sissy girl as I kicked my character into sprint mode, while saying in party chat "Run, just run, don't look back!" his response "Why?" stop turn and immediatly say "Oh sit run!" luckily we got away, another player waltzed between us and dragon only to turn into a snack.