I've normally just told parents about it before too and like you, they just wave it off as normal behavior and say "it's to be expected, kids fall" but it only takes 1 parent to make you change your policies to cover your butt even more than you've tried to cover it before right. Some people have unrealistic expectations of group care and expect their child to never (or very rarely) have injuries. Kids need to explore and learn to do things and sometimes they fall while they're doing that. It obviously was a trust issue (and I should of known that at the interview when she started crying because she had to go back to work and had to trust someone with her child) and this was a new issue for me since I've never had any issues like ever.
Reggio, that is a great consent form!