She was extremely worried, having five children. To carry only one's own children would have been selfish; to carry her sister-in-law's kids in addition to her own was considered a virtue (i.e., mutually helping through difficulty). Fortunately, there were persons along the road who were willing to lend a hand with the kids.
大媽好生著急，五個孩子，要背自己的是自私，要背弟妹的又捨不得自己的孩子，親情道義兩相為難，所幸有路人幫忙分背了孩子。