You are not a bad mommy! I think it is very hard to trim their nails and I won't even attempt it.
I take my girls to the groomer.
Talk about bad mommy
......I once cut Pixie's ear with the clippers trimming the hair on them. OMG I felt like the worst mom in the world. It was only a nick but I felt like a butcher.....I have not trimmed her ears ever again..