It is propably not OK to do so.But it is the way how the ancients solve problems. Venat is not different. I guess, she was socialized in the ancient society and she does not know other solutions. And the second thing is, she must act like this because we told her, that she will do it in the future. If she would decide not to do so then she would alter the present of the WoL. That is the reason why i do not like time traveling into the past. You can only lose doing it.
Cheers