What is the difference between jmdn vernachlässigen and jmdn ignorieren?
Ignorieren is to ignore. You can do that at a meeting or during a term of school.
Vernachlässigen is basically to not take enough care which for people might turn into to not give enough attention. It usually talks about a somewhat longer period of time (in context of people).
But there is still more attention given than would be if I ignored her.