Yup, I just played Prime Remastered recently which takes place very early in the timeline (between Metroid 1 and 2), and Samus immediately readies for battle both times she comes face to face with Ridley, by Other M she should be able to deal with him in her sleep.
Even factoring that in, it makes no sense. At that point she had bitchslapped ridley multiple times. It's after super metroid.
Yup, I just played Prime Remastered recently which takes place very early in the timeline (between Metroid 1 and 2), and Samus immediately readies for battle both times she comes face to face with Ridley, by Other M she should be able to deal with him in her sleep.