On a certain level your arguments are solid but look what reasons (excuses) you use to avoid the basic premise - A human being is sovereign to her own existence! How can any external force/authority tell a mother how to deal with her own body? In particular when she is well connected with the fetus's soul-level.
Alas, science has not proven yet the existence of a soul; hence, my arguments seem to you and many others to be bizarre or even whacky.
Yet, I stand firm in my opinion. Only the mother (who is healthy and in her capacity to make conscious choices) has the right to choose regarding an abortion. She may consult with the father or other people in her community but at the end the choice is hers.