Why did Beatrice Taylor drown herself?

Why did Beatrice Taylor drown herself? Beatrice Taylor worked for Emily as a maid, but when Beatrice got pregnant, Emily immediately threw her out of the house. Friendless and despairing, Beatrice drowned herself. Emily insists that she has no reason to feel remorse, but the story horrifies Vera.

Beatrice Taylor worked for Emily as a maid, but when Beatrice got pregnant, Emily immediately threw her out of the house. Friendless and despairing, Beatrice drowned herself. Emily insists that she has no reason to feel remorse, but the story horrifies Vera.