This is an interesting perspective, but wouldn’t a more direct analogy be — “could the daughter have the right to terminate the life of her mother if the care of her mother was going to become burdensome for the next 9 months? Even if the life of the mother was directly dependent on the daughter for 6–7 months within that 9 month timeframe?”
Note: I am not a pro-lifer in the historical sense and I don’t advocate for repeal of Roe v. Wade in the US, but I do believe that there is a need to be realistic about what we are talking about. An abortion simply is the extinguishing of a life. It is easy to say at early (non-viability) stages that it is just a mass of cells, or not survivable without the mother, but really that is just an psychological device to soften or avoid the moral dilemma.
Moral dilemma’s should be hard choices in my opinion.