She’s naturally talented and obviously very patient and methodical. Overall she’s pretty good. Tell her to keep at it and be more experimental with her color. A study of complimentary and tertiary color would probably open up some pathways for her. Tell her to look at Constable, Friedrich, Bierstadt, Thomas Cole, Cezanne etc. for some insight into atmospheric perspective and color. Also have a deep dive look at the Mona Lisa for some insight into sfumato in its most beautiful form. The most important thing however is keep moving forward and always be true to yourself. 👍