But why would it bruise her whole face including waddles on the top?
Just like when you get a bruise the blood spreads out in between the layers of tissue. Depending on how bad the bruise is(how much blood there was) will affect how large the bruise appears. The head in any animal is very vascular and bleeds a tremendous amount. I also believe if her waddles weren't physically attacked that the bruising in them will be from gravity drawing the blood down.