What is this URM you speak of? Sorry if I'm not up on all this stuff, I'm kind of new on here but I am similarly in a situation where I missed two events for Ayane, (The Aforementioned Light and Over & Over) and even though I know now why I did, I really don't want to have to go back and load up a save from before Our Time Atop This Mattress and play all the way through again.A makeshift solution for you:
Use URM to set flags futabalust10 and chikalust10 to true. This will overwrite their skip or miss flags and display events in green rather than red crossed out in the character events. If you want to be thorough you can set their respective skip or miss flags to false as well, but it's not going to change anything from a player perspective.
You won't be able to trigger them normally for these two events unfortunately, but you can at least view them in the replay, and your save will appear as if you missed nothing (that is if a full-green save is what you aim for)
Muchas gracias.