Naming her after my Grandmother

My grandmother was born Kathryn Marlene but she has always gone by the name Marlene.

I really want to honour her by naming my daughter after her. My husband picked Hannah as the first name but the middle name hasn't been decided.

She was the only one who made me feel better when I announced my engagement to my parents and they got upset. She's also the only one who cared about the fact that we couldn't get married in May 2018 because of money. She mailed us a card with money to go out for dinner on the night we would have gotten married.... she's so wonderful. The rest of my family is judgy and excludes me. I just want to honour her.

Which name is best?