How Philip get infected (my research)

[Flodda]

but do the attacks really hurt you? I got hit many time in the "fight" with her/it, cause I had no clue what to do, and didn't seem to lose a significant amount of health.

Did someone actually try getting killed in that fight? Cause if you can't die there it's very likely that shes not infected and it's only Clarence messing with your brain.