What kind of doctor or professional will check to see if a senior (88) is competent to sign a will that she wants to change?

Yes, it does seem like an unnecessary waste of time and money for multiple lawyer and doctor visits doesn't it, but it seems as though you will need to do it their way if you want to get it done.

The lawyer says wants to make sure there is a letter so no one can contest the will later on. The lawyer said when she spoke to her she knew what she wanted. This seems to be lots of procrastination and delaying apptments to the neurologist. She does not see a geriatric specialist. When I was visiting her we reminisced about family we played cards went to
Play bingo. All was so good.

A few years ago my mom wanted to change her POA's. Told her attorney of Mom's dementia and that I was not at all sure if he would be able to do it. Took mom to the appoointment, he met with mom privately for about five minutes. He had to be assured that my mom understood what she was signing, what it meant, etc. He would not change the POA, he found mom already incompetent. Did not ask her doc after that, no point. I knew what the attorney was ethical in refusing to have her sign a new POA. Too bad, ended up with mom's POA spending outrageous amounts of mom's money on attorneys fighting to have mom placed in a facility rather than receiving care at home from me. Mom's most costly mistake in her life was appointing this sis as POA!

I think the doctor already gave you the answer, see a neurologist and ask for a cognitive assessment. Ask the doc if they have someone they would recommend.

Complicated she wanted her medical doctor to do it but he received a phone call for her powr of attorney named in the wall stopped it from taking place the doctor then said see a neurologist. The lawyer wants to make sure she is competent to change the will. She knows what she wants. We just want her to change her will according to her wishes. Please advise.

Her own doctor can do this. Does she go to a geriatric specialist? Is there any health consideration that makes the lawyer reluctant to act without a note from her doctor?