1) The twins have very powerful mental shields and Rubedo is specifically resistant to mind control. But Rubedo's also a little weird and wouldn't really care if a vampire fed on him as long as said vampire asked first and didn't take enough to do any worse than making him woozy.
2) They do have some telepathic abilities, but they generally don't prod without reason. And with Horst's mind being actively guarded they'd need to reach through his body and into his mind to get anything anyway.
no subject
1) The twins have very powerful mental shields and Rubedo is specifically resistant to mind control. But Rubedo's also a little weird and wouldn't really care if a vampire fed on him as long as said vampire asked first and didn't take enough to do any worse than making him woozy.
2) They do have some telepathic abilities, but they generally don't prod without reason. And with Horst's mind being actively guarded they'd need to reach through his body and into his mind to get anything anyway.