Apple HD encryption?

I do data recovery on the side for people. I have a friend, years ago her mac died but she’s been holding onto it because there was pictures on it. I told her I could help her but the HDD is encryped. She gave me some password ideas but none of those seem to work. Is there a way to crack it? I’m not super savvy with the tools and I haven’t found anything that talks about getting the hash from a hard drive to be able to use hashcat. Thanks in advanced.