Who voiced Grandma Ruth in the animated series?

[xbskid]

So after having received my copy of the Sam & Max cartoon yesterday and powering through it, I noticed in the episode Christmas Bloody Christmas that Sam's grandma had a very familiar voice. Unfortunately, the end credits are too generic to say who guest starred, and there's no info on IMDB, Wikipedia, or the Sam & Max Wiki. ...It's not Carol Channing, is it?

[Icedhope]

Probably the best way to figure this is to take note of the actors in bloody christmas, and then go to another episode and mark what female wasn't in it.

It could also be the Actress didn't want to get credited for the role.

[xbskid]

The problem is that the only voice credits provided in the end credits are for Sam, Max, and the Geek, and there's no "Other/Misc Voices" section.

[supmandude85]

I did.