Welcome to the forum Pam! Sorry to hear about your window problem.
Maybe not relatable to your problem, but I had a non-standard oval front door glass break on the front door of my house. Went to a local plastic shop that makes custom acrylic boat parts (windows, dash boards etc.).
They said if I gave them a template of the opening and a sample of glass thickness, they'd make a replacement panel out of UV stabilized acrylic. They made it ever so slightly smaller to ensure it would go in and it fit perfectly at a price that was 1/6th of what a glass place wanted.
I now have a nearly indestructable door panel, although they caution it can scratch easily so use caution went washing off grit. Perhaps a plasic replacement can be fabricated for your application.