Well, if Bella were dead, then she couldn’t be her kids’ mom. Rosalie would remain an aunt, but a primary-caregiver aunt instead of an occasional-caregiver aunt. Less competition for the child’s attention.
Edit: And it’s not like the only reason Rosalie considered offing Bella was for egg-related reasons. Remember, Rosalie doesn’t like being a vampire, she would have wanted someone to kill her when she asked. Bella’s situation is different—better—in several ways, but insofar as Rosalie understands Bella by analogy to herself, it seems like it might be in Bella’s interests to die instead of turning.
Well, if Bella were dead, then she couldn’t be her kids’ mom. Rosalie would remain an aunt, but a primary-caregiver aunt instead of an occasional-caregiver aunt. Less competition for the child’s attention.
Edit: And it’s not like the only reason Rosalie considered offing Bella was for egg-related reasons. Remember, Rosalie doesn’t like being a vampire, she would have wanted someone to kill her when she asked. Bella’s situation is different—better—in several ways, but insofar as Rosalie understands Bella by analogy to herself, it seems like it might be in Bella’s interests to die instead of turning.