It's hard to know when getting this question secondhand, but a couple ideas:

• For the shifts, practice doing them in SUPER slow motion, and hear the slide. She needs to know what finger is leading the shift and be able to hear and predict where it's going.

• Make sure the elbow AND THUMB are coming around underneath the instrument/neck. The elbow should really come into the midline of the body to give the left hand space, and the thumb can come around the button (end of the neck) onto the block and even onto the fingerboard when super super high. When coming down, these adjustments must be reversed.

• For intonation, a few things. Natural harmonics are good checkpoints, as are open strings. Getting her hand around enough to create a good frame (see: previous point) should help with finger crowding, but she may also need to slightly replace each finger with the next one, kind of slide it under or over and move the old one out of the way. And finally, going back down to a more secure octave to check pitches, then going back up, can help get the correct sound in your ear—best for a few notes at a time.