This is not very usual but also not that bad. Financial report as information right is normal for investors. You don't have to report it every month as we are early-stage startups. Quarterly report would be fairly reasonable. You should discuss it with your angel investor.
This information is useful for a startup to produce anyway, since it helps focus the mind on cash issues (the single biggest reason for startup failure is running out of cash). Perhaps that is the intention of the investor.
You can add and leave out whatever information you feel comfortable with, as long as your terms don't state otherwise.