How Russian special services manipulate families of Ukrainian prisoners of war

I've read several stories about captivity.
A woman whose husband is in captivity confessed: I got a call from there. She spoke with her husband – he is alive. To secure his release, they demanded that she "turn in" critical objects, photograph military equipment, etc. She lives near a major railway hub. But her husband seemed to warn her – he repeated three times: I'm fine, don't worry. She says the urge to cooperate passed, but it was there...
The war has been going on for three years. No fewer than 8,000 Ukrainians, including soldiers, are in captivity in Russia. It's hard to imagine the state of families desperate to free their loved ones from Russian torture. Russia is slow to exchange prisoners, playing on nerves to exploit the state of the exhausted and disappointed by the long wait.