Lilmod:
1. Are you talking about EY, America or both? What age are you defining as older? And what leads you to believe most older never married girls marry divorced/widowed men?
2. I don’t think there’s a significant number of twice divorced people for that to be a notable factor.
3. What leads you to believe most divorces are initiated by women?
4. What you call an “unfair assumption”, many gedolei rabbonim have asserted.