Don’t worry. Your mom is not the problem here!
Studio ghibli movies shows what anime would be like if it wasn’t solely made to appeal to horny adolescent boys. I think it’s the only Japanese animation I would dare watching with my parents / kids without having to check prior if it got weird shit like in the second panel. I remember my brother begging me to watch the movie “your name” ( or weathering with you? I don’t remember ) because it’s supposed to be a very well made emotional story. the first ten minutes a boy exchange his body with a girl and vice versa. The first thing the boy does? grope himself. I closed it and re-watched princess mononoke instead.
Not every animation has to be for kids or tame. And I would love more stuff that would be weird to watch with parents or something. However a lot of anime is just weird and immature imo, but studio ghibli stuff isn’t the only that is bearable to watch
Considering that most western media is completely insufferable, maybe it’s not such a bad thing that Eastern animation tries to keep the target audience in mind. Sometimes stuff that is the coolest thing on earth to a 15 year old boy it’s just cringe to us adults.
That’s fine, it’s not for us. There can be other media that’s meant for Us.