I have a friend who constantly relies on others.
She will ring up and expect to drop a toddler and a preschooler at a moments notice for a couple of hours, so she can attend appointments that were booked weeks previously.
She has money to put them into childcare and does so when she is working, but just feels that her friends are at her beck and call.
She is about to have her 3rd child and we are dreading it.