A lady told me told me about her chronic insomnia that is not helped by sleep aids. She does not like taking them either. It takes her a long time to get to sleep and once asleep it usually does not last for long. If she is woken up it is very hard for her to get back to sleep. One night she woke up and started praying for the Holy Souls in Purgatory. After this prayer she fell into a deep sleep. Each time that she prays for the Holy Souls in Purgatory the same thing happens. The lady has never specifically asked the Holy Souls to obtain a healing of her insomnia.
A strange story
Now I will tell you a strange story that a mother and her daughter told me. You can decide for yourself what to make of it. Each night a friend would telephone them late in the night and ask them to pray the Rosary for her, which they did. When they mentioned this sometime later to another person, they were stunned to be told that the friend who had been telephoning them each night, had been dead for about six months!
If the story that the mother and daughter told me is correct, then I can only assume that the friend who was telephoning each night asking for a Rosary to prayed was actually a soul in Purgatory.