This is a silly question. I could see this two ways:
1) The fact that the mother is waiting and wants to meet her son likely indicates love. 2) But if the mother was waiting in the first place because she is worried about her son’s safety on the bus or at the bus station, then that would indicate fear.
Ultimately I believe the motivation for waiting is out of love. Fear for someone else’s safety could be considered love in some ways. But I can’t answer definitively.