If I don't wash this glass will it be okay?

So my cat broke a champagne glass today, and that glass was very important to my mom (it was from college) and so I took a regular glass like it and sort of recreated the glass from college of hers. The glass that I recreated had before had apple juice in it and I didn't know. Will the glass be ok to just rinse and dry or does it need a real wash? (also I know this question is silly you'll say: just wash the glass anyways silly! but I have my reasons for not wanting to wash it.) please help. Thanks.