This took me a while to dig through some old posts but found an old one where NogDog posted a solution for me:
\w\xC0-\xD6\xD8-\xF6\xF8-\xFF
is regex for most international characters. I am finding for some reason it leaves out others such as ć.
I had later added \pL to the tag which made no difference for this letter. Isn't \x supposed to related to hex? All the hex conversions I find are like x107 and such when wanting to add in these other letters.