Im still not sure what's bothering Misuzu.

I think Misuzus feelings can be comparable to a doting parent (or to be more specific a doting dad and his daughter who is basically his little princess) - while she wants Tomo to be happy and is trying to help, she cant help feeling like she is giving somebody very precious of hers away (and on top of that to Jun, the guy she may or may not be looking down upon lol) ٩(๑❛ᴗ❛๑)۶