Strange. Google image search is usually way more accurate than that. Usually it brings up a page full of pictures of the person and then maybe only one or two aren't them, and it's obvious which ones are wrong.
I've used Duckduckgo this time. Here are a few from an actual article about her that you can find here:
Irene Ryan Nearly Missed Out On Playing Granny
And the photos:
https://encrypted-tbn0.***NOT-ALLOWED***/images?q=tbn:ANd9GcQk0X0-drhF6Kd3sq02fV4WF4eyFW9Fs1d0zA&usqp=CAU
https://encrypted-tbn0.***NOT-ALLOWED***/images?q=tbn:ANd9GcSNiYP-Os4P_t5OXg6Sf60pAbt4MWnRPRrAyQ&usqp=CAU
https://encrypted-tbn0.***NOT-ALLOWED***/images?q=tbn:ANd9GcTUk-nMgUxa5-3Luq_f2bpvoKaCmB5EOb9FUQ&usqp=CAU
Edit: Oh, brother. I finally found authentic pictures of her and for some reason they're not allowed. Just click on the hyperlink then. It's not a porn site. There are a bunch of pics of her, old and young.