Update today June 20 (First email sent March 25). May 26 I responded with exactly what I thought about having to pay for a repair. In that email I requested to pick up my bag June 23 on my NYC visit. I received no response.
I just got an email saying my repaired bag is on its way back to me, and I have not paid anything.
So - good outcome, as long as the repair is up to scratch and lasts. Still have to say that I am mightily unimpressed with both their communication and their expecting me to pay. It feels like they are trying to screw customers further, and many people won’t push back on that. Thanks for all your help on this thread!