Linda Hamilton who originally played Sarah Connor in the first two Terminator movies mentions Lena in an interview:
She was very good, very good. I know how difficult it is to step into someone’s shoes, or to fill someone’s shoes. I would never want to be the standard. I guess it’s great that I’m the standard, but each one of us has our own special gifts that we can bring to a part. She wasn’t trying to be Linda Hamilton, she was trying to play Sarah Connor. Her version is just as valid as mine.