Hey, now, we know Haku turns out alright. He seemed like a cute kid in high school. But yeah, that is dangerous. He's in a harness, at least.
I love her commitment to spending time with her son, though. It means she doesn't intend to repeat her mother's mistake of losing touch with him over the years.
Also, it's hilarious that Adelt and Hana had another kid, finally... after Chitoge became a successful businesswoman and mother. They don't remember their ages, indeed.