Possibilities are endless with the track
1) they might follow their trend and Tej might be cured. Meety's dad's murdered might be caught all in this track so that baadmay pura focus parhai aur career oriented tracks mein ho with little bit of family drama
2) they might cure Tej, but he might not remember everything of that fateful night or maybe he just saw Ashok Hooda dying and never saw the killer. Slowly Meety will learn about this and this track will run in parallel with college track
3) Meety might investigate doubting smth, and Hawa Singh might get to know and he might directly /indirectly try to harm her or her family to stop her
4) they might catch Hawa Singh for the time being, and hum sab ko lagega Chalo problem khatam hua but maybe later they might show that Hawa was just a pawn, and there is this whole team of corrupt officers behind Ashok Hooda's death, as he might had some evidence against them
Ab Tej ko yeh log Puri tarikay se thik karke Meety k dad k murder case solve bhi karwa saktay hain. They might make his condition worse or keep it same. They might also make him well, but he might not remember anything of that night / even if he does, he might try to hide it for some reason or for some time (good possibility)
There are 'n' number of ways. Bas track ko decent pace mein rakhe. And I don't want MeMe to jump from one problem to another, I hope beech mein we get to see their relationship progress too