Aw, my paw!

Libby is an incorrigible chaser of cats - or at least of cats who run away. Any that turn bring her to a cartoonish, four-paw, screaching halt.
Yesterday morning, she took off after a cat and I heard a sound like glass breaking. She had run through a pile of broken and discarded terra cotta tiles, sharp as knives. When she came back, she was neither limping nor bleeding, so I figured she'd got away with it.
She seemed fine this morning, but at noon, I noticed something off with her gait amd discovered a 3 cm. gash in her "wrist". The cut just went through the skin and is quite clean, so I've disinfected it and bound it up. Too late for stitches since the edges were granular. She'll be fine, but we're both sad for the moment.