Not really a fan of either in auto but if it has to be auto the sw would be the way to go, don't have to rev it so much to get anywhere, advantage of actually having some low-mid range torque. Auto's and high rev's don't mix to well! Of course if she's never driven a mid rear before it will take a while to get used to, specially if she's partial to breaking even the slightest bit into a corner.
If your happy with her driving abilities get the sw, if your not so sure get the 101.
Either way if she's like my fiance she'l have her mind made up already and you'l just have to check it to make sure it's a good buy