I think it´s ideologist crap to declare for all times and for each and every single woman that bangs can´t go with long or superlong hair. With some women, bangs generally look terrible, with others, they look extremely sexy with any hairstyle.
I think that Katrin (and blond Irena whose pics were on some post about three months ago) belong to the latter category - I find that their bangs are a definite turn-on - for me, mind you, not for everybody. I would ask her to keep them, but I bet she won´t ask me for my opinion, and she´s right not to do it.
How naive can you get, believing your vote on the web for a drastic change in the hairstyle of somebody you don´t even know personally will indeed make her comply with your wish?