You've got a potentially interesting concept here - a character who is in denial about the loss of a key family member. Unfortunately, Geordi was precisely the wrong character for this concept, which is botched badly by the writers and producers to boot.
Here's the deal - I am not sure Levar Burton, at least at this point in his career, was capable of generating the kind of angst this story merits. And for that matter, why should we care about Geordi's parents? They'd played only a tiny role in the character's development over the previous 6 seasons. All of a sudden we're supposed to care?
Of course, it gets worse because there isn't much exploration of what is clearly a tragic event in a character's life. (And which, to my recollection, is never mentioned it again. I guess in the 24th century people get over loved ones in 7 days or less.) Instead, we're stuck with another cliched "energy life form takes human shape".
A real snoozer, the kind that was unfortunately typical of the 7th season.