I ran my macro and it erased my work, how to fix it?

Hey so first of all, this is not my problem, it's my gf's problem and she told me in Spanish so I will do my best to translate it to English, hopefully someone can help us!

Basically, she ran her macro but didn't save before she did it, she says that she probably made a mistake defining ranges so when she ran the macro it made a mess, then she tried to debug/purge? It and it erased all of her work.

Is there any way to solve this? She's been working on it for a long time :c

Thank you very much