This has included the offer of counselling services alongside welfare checks and other practical measures such as re-uniting passengers with luggage left on the trains following the incident.
Mae’r help hwnnw wedi cynnwys gwasanaethau cwnsela ynghyd ag archwiliadau lles a mesurau ymarferol eraill fel cael y bagiau oedd wedi’u gadael ar y trenau yn ôl i’r teithwyr.