Having watched the Mysterious Cities of Gold and the Solaris eps, the Light reflecting (and concentration) idea Marika had was obvious the very same instant she got the flash.
The whole ep felt like textbook rookie crew training.

Thanks for reminding me that ligthning 11 goal wasn't to scrape the Odette, but stealing it for its value.
So the laser aim was at the sails/masts rather than the ship itself. Destroying it would only waste its value.

Overall, one good point in the ep was that the girls realized there are more than computers and computer assisted weapons to space combat... and that even when all your systems are down, when you have power, you can still manually shoot. Even if the error margins are high, you might eventually hit your target.
Just remembered writing it that to help your eyes and arms, you can have basic assistance for targetting in the form of relatively low tech electronics you can't hack at all. These systems would only be down with powerful EM waves, so powerful in fact you'd kill any living thing in the ship before affecting those parts...
So yes, the old ways of doing it are not to be forgotten.