I'm going to have to drop my child to catch the train.
You literally mean that you are going to drop your child?
I have a train to catch, its hard to run with the child in my hands.
Dropping your child to catch a train is negligent. You should have managed time better to catch the train.
I'm fine with it and it isn't a big issue, I can always catch the next train.
That is what I was trying to say this whole time! There will be another train in just a bit, there is no reason to purposely drop your child.