Hmmm... actually what you're describing sounds a lot like ADD to me. My husband has ADD and he's not medicated right now. When he is he is better. But once he gets an idea into his head, he has to do it right now. Sometimes I try to convince him to sleep on it at least, but no, he can't do that. It's impossible for him. So he takes up this new hobby, project, "business" idea and sometimes they last a few weeks or a few months, but usually he burns out on them pretty fast.

And yes, he will see something on t.v. or on YouTube or a friend will tell him something, and he gets into the idea he has to do this, too. But then it fizzles out. I know it can be frustrating at times, especially when the projects are expensive and it is more like an impulse or compulsive behavior.

Since you say she's been like this her whole life, it might be worth considering, but the only way to know for sure is if she would see a doctor.