As with the OP, my dog 'ate" one of my blinds. Some years ago, when new, my motorhome came with "day/nite" blinds that we constantly broke the string(s) and under the warranty, the dealer fixed them. However, when the warranty stopped, the charge would be around 100 bucks to do this job. Gotta be a better way.
We found it. "Blinds To Go" is a chain that has just about everything in this department. I brought all four of the original "day/nite" shades to them (for accurate measurement) and within a week I had all 4 replacements (vinyl, 1") for $130. The mounting, due to extremely limited space (between the wall and rear of the cabinets...was 2 3/16"...was agony...but up they went and still perfect.
We learned the hard way that when we leave the dog alone (eating out, etc.) we keep the blinds up. She likes to look out the window and apparently will kill do do it ! LOL!!!
Blinds To Go don't seem to have any stores in Ohio...but maybe something similar?
g'luck