Things that make me wonder

Faye had severe insomnia. She had prodigious energy, but she had insomnia.

Sometimes she would wait in bed for me to wake up so we could pray together but often she would get out of bed at 2 or 3 in the morning.

The reason I'm writing--or thinking--about this is somethings I've learned recently about the importance of sleep to health.

In fact there is evidently a connection between insomnia and heart disease. So I wonder did her insomnia damage her heart, or was her insomnia a symptom of an underlying illness?

Just wondering.