I had to name the mother Mom and relationship also Mom so the mc wouldn't call her by name. Is working for now, but I guess at some point when more characters are introduced they will also call her Mom since that's what I named her and the immersion is going to break when that happens.
My suggestion to the dev, let the mc and sister call/mention the mother only by the relationship and not by name. That way, we can name her whatever we want for the people outside.
I feel like the optimal approach would be to add a 'refer to as' variable.
What's her name: something
Relationship : mom / sister
Refer to her as : mom / sister