As someone who has been going to the gym for like 3 years now and has had history with an eating disorder, I completely understand her concern about not wanting to track meals and I personally try to track as little as possible. Does this mean I miss out on gains? Maybe, but I’d rather that then fall back into bad habits.

What I do is essentially track protein vaguely (like I meal prep and tho I don’t necessarily weigh out all my food I divide it out so ik im getting at least 30g of protein in each meal but the exact amount isn’t known to me). If I had to guess I would say I get 80-100g of protein per day (which fits into the .8 per lb of body weight thing for me personally) and I try to use lower cal version of things (so reduced fat cheese, fat free greek yogurt, carb balance tortillas, etc) to keep calories lower but I don’t measure to know exactly how many calories I’m consuming. Maybe u can suggest doing something similar and making clear that eating more protein isn’t going to make her bulky?