Mary (Supergirl Meets E.T.)

A woman with blonde hair was a part of the 'caring Earth family' that took E.T. in. (WC: Supergirl Meets E.T.)

Behind the scenes
Although she went unnamed in WC: Supergirl Meets E.T., she was named as "Mary" in both E.T. the Extra-Terrestrial and NOTVALID: LEGO Dimensions. She was the mother of Elliott, Gertie, and Michael.