Yeah it will be because you encountered the bug already. I did keep this in mind when developing the fix however I do see where I made a very slight mistake when trying to mitigate the damage for players who had already encountered the bug. I have released another patch which should fix the save file of anyone who encountered this bug.
Judith must be met in the park on a weekday any time after 16:00. I think I will change this in the future for her to be there at 15:00 on tuesdays-fridays so she's always there if the player goes to the park immediately after leaving the academy.
Crystal's final heart (assuming you've done her science homework quest and given her her 2 gifts) is tied to Judith's questline.
The next meeting with Lilith is also tied to Judith's questline.
I have sent you a discord friend request. Please accept to I can send you an invite link to the server