Being serious for a mo, I don't think we can expect her parents to encourage her to eat healthy meals lmao, she is an adult. My parents ate incredibly unhealthily in front of me (freezer food every night, multipacks of cresp & chocolate, those grimmo tinned meatballs - they also didn't cook for me past age 9) as an adult I choose not to eat as unhealthily as them. I still probs eat too many snacks (see easter egg and jaffa cake habits) but I eat better than they did.
She could make the same choice, but she won't because she's a professional snaffler with a gunt to fill.
This was a ramble but basically we can't expect her parents to coach their adult child on how to eat, they obviously don't care, let's be real.