Something can be “yours” because of association without being literal property. For example: your wife or your grown child. You don’t OWN your spouse or 40 year old child, but they are still YOUR spouse or child as opposed to someone else’s.

Likewise, the women of the various European countries being raped by foreigners are TO that country the same way that you are related to your grown child. “Our women”, meaning “women native to OUR country” as opposed to people native to OTHER countries.

The people of Europe are collectively understanding that they are more similar to each other than to those of other countries the same way that you and I, as anti-statist radicals are more similar to each other than to other groups despite otherwise large differences of opinion.