So sad. =(
I haven’t repaired cracked leather. I was thinking about your situation, and Googled a bit.
I was wondering if it might be worth looking into a leather repair kit. This one seems to be the most popular on
Amazon. In the reviews, there are some examples of repairs that looks quite good (along with others that don’t look so great.)
https://www.amazon.com/Strongman-To...&s=gateway&sr=8-1-spons&psc=1#customerReviews
I saw this on YouTube but lol, I’m skeptical. Looks too good to be true!
If you plan to fix the cracks on the outside, I’d maybe think about trying to prevent the leather from ripping, especially when the bag is filled. Maybe you could put something on the inside of the bag (on the suede) to reinforce things, like a piece of scrap leather. (I get it at Michael’s. I sometimes do experimentation on scrap leather, before working on a bag.)
For example, in this video, she places a patch on the inside of the sofa, before repairing the damage.
Again, I’ve never repaired cracked leather. Just wanted to share, even if there's only a very small chance that it could be helpful for you.
Keep us posted, and I wish you success.