Can a executor of a will invest my money without consultation?

We have a real beauty here. Sis is executor. Gave me an incomplete copy of the will(missing pages). She says she was told to invest MY portion,BUT did not consult with me,AND has not provided a proper accounting facts figures of my inheritance.Sounds fishy to me.Also she has to deposit a monthly small balance in my account BUT it appears she can do ANYTHING with the principle interest investment profit etc etc.