The way cannon magic seems to work, love-potion based love probably doesn’t count as Real Love for purposes of protection.
Edit: In fact the quote at the top of the Potter wiki article on love potions says:
Powerful infatuations can be induced by the skilful potioneer, but never yet has anyone managed to create the truly unbreakable, eternal, unconditional attachment that alone can be called Love.
Bella isn’t under the influence of a love potion, though.
Oops, I misread what you wrote.
She is however under the influence of equivalently dark arts.
I cannot help but find that quote hilarious.
The way cannon magic seems to work, love-potion based love probably doesn’t count as Real Love for purposes of protection.
Edit: In fact the quote at the top of the Potter wiki article on love potions says:
Bella isn’t under the influence of a love potion, though.
Oops, I misread what you wrote.
She is however under the influence of equivalently dark arts.
I cannot help but find that quote hilarious.