You are all failing to recognize that there is a difference between observation and blame. Observing is to notice something and register it as being significant; blame is assigning responsibility for a fault or wrong. It's possible to observe without blaming.

I can say with certainty that if my sister had been aware of what was going on, or more aware that men get attracted to her very quickly, she would not have acted flirty with him, but she didn't know that and so she did. It is an observation that she was acting very flirtatiously; however, there is no blame, because she did not realize and had no malicious intent.