Did she actually say anything about the money in that message or was it just the cat pic with nothing else? I'm asking because those are two very different situations. If she's ignoring the bill completely then you send a firm invoice with a late fee and move on after that. But if she's at least hinting at something, you push a little harder before writing it off.

$85 seems steep but maybe he's in a market that supports it, my area would laugh me out of the shop for that. Your $70 bump sounds pretty reasonable after 3 years, just see how your regulars react before worrying too much about what Tulsa guy does.

How long before you could actually sit through a whole episode again?