I do not think having an abortion puts one out of reach of God's unmerited favor and forgiveness.
For as high as the heavens are above the earth,
So great is His lovingkindness toward those who fear Him.
As far as the east is from the west,
So far has He removed our transgressions from us.
Just as a father has compassion on his children,
So the LORD has compassion on those who fear Him.