Yes, the great thing about these trusts, is not being subject to the millions of ever-changing statutes, but rather only to the everlasting and ever-the-same common law, you basically have limitless freedom and flexibility to design, adapt, modify, and operate the trust any way you like, as long as you don't use it to violate the rights of anyone else.
You and your wife can be co-trustees, and you can make the powers, responsibilities, and privileges of each of you as specific or as general as you wish. You can also make her protector, who has the power to hire and fire trustees; or you can make her manager, managing trustee, successor trustee, or beneficiary. Or, if you really want to give her complete freedom, you can set up an entirely separate trust for her, and encourage her to be trustee of it. There are discounts for multiple trusts ordered at one time. (1 for $2500; 2nd @ 2050, 3rd@ 2050, etc). There are lots of ways you can go.
The "how" of it is better discussed with Randall, the trust writer. My role is mainly just to satisfy your "whether" questions -- whether you wish to order such a trust, and whether you have the $2500 to pay for it. If you have both the money and the desire to proceed, then the "whether" is complete. Then let me know, and I will connect you with Randall. Then he will take over the dialog with you from there, and he will entertain all the "how" aspects of it with you.