Help! How can I prevent my mother from leaving for Florida this weekend?

My mom has had some tests to rule out Alzheimer's Diseease and nothing seemed to show up. Then the doc ordered an MRI. We got the results Tuesday.

The doc called me first, so that we could "strategize" and I would have the actual facts. It shows changes in one location and some dark spots in
her hippocampi; and overall shrinkage of the brain. He didn't see any tumors.

He said he can't dx alzheimers from the scan. I didn't understand his reasoning there but... He suggested that she have some neuro-psych testing as a next step. Then he agreed to "strongly suggest" that she stays here instead of going to Florida.

According to the Alzheimer's association, the brain changes she's got occur in AD and are used to diagnose it.

I really didn't know what to expect from her so I waited a day to call
her. She was in the best mood I've heard from her in months! She was
absolutely delighted because (in a nutshell) "he said he wants me to
try some medicine and I don't have to start until after I get back from Florida."

I told her that wasn't what he told me. I only told her part of what he said to me. She claims he didn't say anything about her trip, or
brain shrinkage or neuro-psych tests or a follow up appointment with
him and anyway, "I won't be here then."

The problem is that she insists that she's leaving tomorrow or Sunday for Florida. I really need to keep her here until Monday when we have an appointment with the doc so we can both hear the same things at the same time.

Any ideas on keeping her here? It's too bad that today's cars aren't like my 64 Chevy or 65 VW Microbus... I'd know how to do something easily reversible.





I should have added more background so here it is: My first big concern was in May when she got lost on the way to my house. Then in September, she didn't recognize me when I stopped over to visit unannounced.
She doesn't understand how far the problems have progressed. She doesn't know what she forgets and insists that I'm exaggerating. She denies the cognitive problems and weird behavior.