The more sane you are with Lily, the saner she will be as an adult. We all carry baggage from our parents - minimizing that by showing her an example of how to approach life in a calm and rational manner whilst still being able to express emotion healthily will stand her in good stead.
Coming from Germany, I imagine your experience of meat would have been rather traditional? Or am I stereotyping? Likely haha. I didn't even eat meat til I was 29 and that was in England where at the time we could choose wild meat, road kill and local farm meat so it felt more ethical. Even then I struggled with it. It was a new world of cooking for me, and how it worked. I find this actually helped how I cooked plant based meals!
In Australia it's less hard I think - we have such good produce here, so fresh. We aren't getting beans from some greenhouse in the Netherlands or importing them from Kenya. Meat for us is once a fortnight or so, and it's usually local, from free range farms, so I feel less squeamish about it. I think it depends where you are on the killing animal spectrum. When I put it like that I feel morally bereft for eating meat at all.
I can't wait til my vegetable garden grows and finds balance. Much easier that way.