Poisoning of both father and daughter would make sense to have a better effect in media on public opinion to make Putin/Russia look bad. If just one old ex spy is poisoned, then people won’t care so much, but if a young woman is also poisoned with him, then he is no longer regarded as ex-spy, traitor, but as father and daughter – family tragedy. The public outcry should be stronger in such case. It was not strong enough, so we got next story with poisoned British couple, right in the middle of Russia World Cup.