The context of the following conversation is Casey gave Alex a first aid kit to hold while she addressed a wound Alex acquired playing volleyball.:
Casey says Here take this first aid kit, it'll help you with that wound..
The friend responds Oh sweet thanks! Luckily it's not too bad.
Casey responds Yah that could have been way worse! You fell on that rock pretty hard!.
The friend responds I know, if I had fallen just a little bit farther left i would have hit my head.
Casey responds THat would have been bad. You lucked out.
The friend responds I know! I'll be more careful next time.