[DarkMaster]

If you let her take a serious amount of damage throughout the time she was with you (like me), she walks faster towards her death. So, if she's insanely bloody to all hell, that'll let you know if you took good enough care of her. Apparently you can heal her with a candle, but some people say that's bullcrap. Also have at least 4 spots open in your inventory for spears.