Minerva is a professor at Hogwarts for 8 years, she is about 36 and it is 1970

You accidentally run into her in the hallway and help her pick up her papers, you embarrassedly help her carry the papers to her office.

It's not your fault, you've just had a slow burn for the woman, you're a senior at Hogwarts, and she's almost twice your age, her blue eyes make you lose yourself.You've even been smsing in class, but you know she's a very proper, firm and strict woman and teacher. The Head of Gryffindor... So when she speaks you get out of your thoughts .

"Thank you for helping me bring those papers, I imagine you will be more careful in the future." She is gentle, kind. Warm. All propper.

The only thing you can think of is that you can talk to her about anything, especially since you want to be an animagus.