There is nothing wrong with long-deep shadows, but flatness is a problem with there is no black point, it gives it a hazy, vague look. You can have your cake and eat it, too. For example in #2 the black point here could be be in the shadow behind her hand.
Looking back, also in #2, the hilights are pretty clipped on the shirt. If I were shooting this frame I'd use a technique I like to call "hilight referencing", which is really nothing new - and is how we used to shoot slide film all the time. What you do is spot meter the brightest point that you want to record detail in, and increase exposure to the outer limits of latitude without clipping. Because everything in the scene is darker than the metered reference, everything else will be recorded. Any shadows that do clip out couldn't be brought back up without clipping hilights. Typically you end up with a far ETTR image (occasional in low contrast settings "too far") with deep shadows and full hilight detail which will need further processing; but all the detail you *can* get will be there. I've played with ways to compensate the over exposure by measuring and recording the shadows and adjusting gamma in specific ways, but these techniques I've found to be too bulky to use in the real world.
At any rate ... in this image I'd expose for the sweater and increase exposure by around three and one third stops, knowing that going much above this the hilights will start clipping. In reality, it's hard to determine the absolute brightest area within 1/3EV, so I'll expose 1/3 stop under to give a little leeway.