从国外网站搬运过来的，关于错过乌鸦女的解决办法。。。

yswag217

If you missed all her previous encounters, Yharnam Sewers, Cathedral Ward, and Oedon Tomb, you will have the final opportunity to fight her at the Grand Cathedral (Vicar Amelia boss site) after you have defeated the spider boss. This will be a forced fight with her, so be prepared, and if victorious she will drop the Crow badge.
If you completed her encounters before this point, you will assist her with one last bout where she will give you the badge instead. Note: she can be fought at the earlier locations, but she is no pushover. GOOD LUCK!

没看懂什么意思。。