electronics engineering degree holder here, you're right I didn't have good fashion sense, until my significant other forced me to change out my entire wardrobe fixed it
she's still a child and it seems she probably has a lot of complicated feelings at this point, and from a narrative standpoint it adds another wedge in the relationship to be resolved later and probably strengthen their relationship as a result
This reminds me of the experiment where they swapped how a bicycle handled turning, and just after some practice people can still get used to it eventually, this is a wayyy cranked up version of it, but it does go to show how adaptable the human brain is