First of all, definitely tell her if your not comfortable using a chain. Second of all, why don't you want to use a chain? They work EXTREMELY well, and it only takes a few uses and then you won't need it. She's NOT going to hurt your horse, just get his attention. Don't take it the wrong way, just curious! I know some people don't like that stuff, and thats fine. But I do know if one of the people I give lessons to told me not to use a chain on their horse, I wouldn't agree with them. Some horses need a chain, a lot of trainers use them, they are useful tools. Even some natural horsemen use chains, they aren't severe.