Welcome to the forum!
I see nobody has responded to this yet, so here it goes.
I looked at the inflation percentage and increase in cost of living for Delaware -- a 0.25 raise actually does coincide with the state.
The downside is, a 0.25 raise would impact a high salary worker, but wouldn't make a dent in most everyday people's lives. Thus, my recommendation is to really go for what you're worth. If you're doing all of this additional work and not getting paid, then makesure your employer is aware.
My staff accountant use to pull additional hours and work, but I was sometime oblivious to the fact. It wasn't because I don't keep a close eye on my worker, but things will always slip through the crack. It wasn't until she came to me and said "I think I deserve a $400 bonus" that I realized how hard she has been working -- and I was happy to give it to her!
You should charge what you are worth!