That's good there's holes. It will help with drainage and airflow to the root system.

No big deal if he trimmed the top off, but I think I wouldn't put scissors to this girl again (at least for now). After the plant goes through its stretch phase she might need some defoliation but it's hard to know just yet.

Overall she's looking great. I don't think there's any pH problem and watering can continue on as it has been.

A general rule of thumb is that cannabis plants tend to get thirstier as they grow a larger more robust root system. In early vegetation the plant hardly needs much watering in the first four weeks. Sometimes it may not even been necessary to water for up to a week or longer, but once she's a full grown plant with a full root system, she could be taking as much as two watering's daily. Much of it depends on the size of the container vs size of the plant, and cannabis plants like a relatively large pot. That bucket is decent size and should support her through flowering just fine.