Here's the GIF of part of the commercial from 1986.

Now if anyone does***not***know who she is\, let's at least begin by taking wild guesses.

I say this was a person who did occasional TV commercials, and was hired to do this. She probably did some occasional appearances in daytime soap operas (maybe Days of our Lives), playing a concerned aunt, or sister of some sort. Now talk to me, people.  You don't have to do this sober, you know.