Hey OP, I'll try to look at it, when I get some free time. If you manage to extract the hash of the password then I can help you install hashcat and bruteforce the password. I did experimented with mobile wallets before, never tried Metamask.
It's not a big deal if you know the structure of the password, and of course it depends on the hardware you have.

And how come you don't have a backup of the password manager and even worse, the seed?

ProTip. Never store important data on SSDs.