Hiding in a wood\forest by a stream\river

I'm not sure what the Universe is, except that the story is not from Morpheus' Legacy Universe

1. MC has no familial connection to a superpowered\Hero family
2. MC's attaining powers were not caused by situational stress
3. I was reading "The Knight is a Lady" which reminded me of the other story

MC was hiding in a wood\forest by a stream\river when being chased by bad guys
MC has no idea they are about to be bestowed with powers, more likely it is the realm of fantasy
MC unlike Joshua/Joselyn in "The Knight is a Lady" the change is not a genetic legacy, more by chance because of outside sources.