[Tenzen12]

If he promised them freedom and didn't granted it to them yet, that means they don't have freedom. They were kidnapped and Rou didn't do anything to fix that (he gave them better living conditions but that's separate matter).

Alchemist herself have very high quality clothes and on top of that glasses, which is big deal. That means either she or her family has money and she certainly had higher living standard than she has now. Same goes for blacksmith girl to lesser degree, even if she wasn't career blacksmith than her father was and they were relatively well off.

On top of it they had resources and time do such things as hobby, that means they had very supportive family, which is something would want return to.Regardless there is no way those two in particular would have better live in goblin cave than they had before and certainly they have less freedom now.

Also there is no reason for Forrest not having beach.