A cariad ysbryd can sense living creatures anywhere in the area she protects, and if strangers enter the area she knows of it immediately. Mere entrance to the area is not enough to force a reaction from her, but if new entrants harm any living thing within that area (including each other), or if one of them is already afflicted or wounded in some way, she makes her way to them while singing her song to halt those who may react in fear and anger, and to heal wounded people.
Humanoids, demihumans, and men who chose to live in cariad ysbryd-maintained areas could prosper as well. The ease of living in her presence for a week or more serves as a restorative to a man’s spirit. Under constant, willing exposure to a cariad ysbryd’s song, intelligent creatures heal from fatigue, wounds, and illnesses at twice their normal rate.
In addition certain artists gain particular benefits from associating with a cariad ysbyrd, as her singing serves as inspiration to singers, poets and bards. Spending 1-6 months in the company of a cariad ysbyrd gives a bard a permanent bonus (equivalent to an extra level of ability) when using his voice for special effect such as inspiring his friends or countering the effects of a harpy’s song.
"Detect Living" Su ability that functions similar to detect undead, but only for living creatures, to a range of 5 miles (the size of the cariad's home given earlier in the text)?
Treat as long-term care administered by the cariad?
I'm not sure I like a permanent benefit, but maybe one that lasts for a duration equivalent to the amount of time spent in the cariad's company?
I guess I can agree to all those suggestions. What do you think about changing to a bonus on Perform?
+3 is fine.