As a spiritual being I also believe that we all have Karma & it is my firm belief that for some that Karma is to stay a short while & leave indellible footprints and for others it's to stay a long while and perhaps trash the joint!

Now, holding the spiritual beliefs I do I personally (for my own body) would not now choose to terminate a pregnancy. However, for me it gets a bit spiritually murky as I conversely don't believe a soul that was "meant" to be interrupted in pregnancy would be incarnated now as my child due to that belief I now have... (if I've lost you ask away & bear in mind I am pondering as I write!)

I totally understand this...and agree.
Everything happens exactly as and when it is supposed to.
And if you subscribe to the view that children 'choose' their parents, then you must concede that this happens for a reason. Personally I believe I am chosed because I have certain experience or life lessons to teach, and vice versa.
If these babies chose this incarnation, then that was their purpose for this particualr woman. Their purpose was not necessarily to be born, but rather to imprint the lesson on her life. That is her cross to bear.