Originally, when that woman broke my seal and came back to life...

She absorbed the lesser divine spirits dwelling in Gensokyo and acquired superhuman powers.

She possesses the power to perceive the desires of others and turn them into her sustenance.

In the case of you, a yakubyougami, having your divinity stolen means becoming her puppet.

At that point, I have no idea what she could make you do, but...

A youkai exclusionist like her...

Would likely use you to eliminate your own kind.