My wife is co-excutive and co-trustee of her mothers estate with her sister. We live in Oklahoma and the estate and sister are in Washington st. the problem we have is there are annuities and a home that is to be sold and to be split among several familiy members. The investment company has issued payment for the annuities 2 months ago. The problem is that the sister is trying to stall the disburssment of the funds and the sale of the home. As everything needs both trusstees signatures nothing can be done without the sister. What can we do to force her to stop holding up the distribution of the estate as outline in the will?