I think the umbrella shot could have worked if were an acutal umbralla and not a photog umbrella. Without a handle it's hard to tell she is actually holding it or if its "shopped" in.
I'm just starting to really get into reading about posing but I'm not sure how you could have moved her left arm in #2. It appears as someone elses arm holding an umbrella. I think it may be because we can't see her shoulder or any other part of her arm, her closed fist appears a bit masculine, and it would appear her arm is bent at a 90 degree, also seems masculine.
Again, I've just got into some reading on portrait posing and I know many of the "rules" don't always apply to fashion posing so take it with a grain of salt please.