Elis and Meredith Grey are alike more than just by blood and mother and daughter. Elis Grey shares her fair share of ethical and wise thinking as well as her mindsets in its own ways that have impacted and changed Meredith's life greatly enough.
To me, I believe that aside from Elis's alzheimer's disease, she has quite a lot of logic and wise knowledge on many things in which she used in her practices and patients working as a surgeon at Seattle Grace!