Actually, I'm a bit fuzzy on what Garrick's actually age should be here - that's one of the little continuity things I'm gonna have to fix. But likely he's going to be lying about his age, because after spending several years in Equestria, he's gonna be more like 43 than 37, and yet still looking like he's 25 instead!
As for Grandmother Lynn discussing things with other people...
I'm pretty sure that in accordance with Japanese law, until someone is the age of majority, the parents can decline any and all marriage offers. Conversely, I'm pretty sure that marriage at a very young age can happen, so long as the minor in question wants it, and it's with the parents approval.
American law is more or less the same, just with tighter age restrictions depending on which state you got your residence in.
Now, -OFFICAILLY-, Grandmother Lynn can't strong-arm anyone. But that's only on the official side of things. On the private side of things... Well, let's just say that Japanese law still to this day has an odd quirk where private family matters are left implicitly alone. And Grandmother Lynn is swearing up and down that she will make her son's life a living hell if he does not approve Minmei's engagement to Garrick.
On Garrick's behalf, we will have Captain Gloval since he is the closest thing Garrick has to a father figure. Grandmother Lynn will be meeting with him in an attempt to make some kind of arrangement. Given that Gloval likes Garrick and Minmei very much and wants to see them happy, the old Russian will gladly conspire with the Lynn Family Matriarch - if nothing else then to make sure that the legal road is clear on Garrick's end.
(Though there would be a bit of a fun moment where Grandmother Lynn demands to meet the elders of this Masaki Family that Garrick had been 'adopted' by and Auntie and Uncle are all like, "Uhm yeeaahhhh, about that...")
As for Grandmother Lynn discussing things with other people...
I'm pretty sure that in accordance with Japanese law, until someone is the age of majority, the parents can decline any and all marriage offers. Conversely, I'm pretty sure that marriage at a very young age can happen, so long as the minor in question wants it, and it's with the parents approval.
American law is more or less the same, just with tighter age restrictions depending on which state you got your residence in.
Now, -OFFICAILLY-, Grandmother Lynn can't strong-arm anyone. But that's only on the official side of things. On the private side of things... Well, let's just say that Japanese law still to this day has an odd quirk where private family matters are left implicitly alone. And Grandmother Lynn is swearing up and down that she will make her son's life a living hell if he does not approve Minmei's engagement to Garrick.
On Garrick's behalf, we will have Captain Gloval since he is the closest thing Garrick has to a father figure. Grandmother Lynn will be meeting with him in an attempt to make some kind of arrangement. Given that Gloval likes Garrick and Minmei very much and wants to see them happy, the old Russian will gladly conspire with the Lynn Family Matriarch - if nothing else then to make sure that the legal road is clear on Garrick's end.
(Though there would be a bit of a fun moment where Grandmother Lynn demands to meet the elders of this Masaki Family that Garrick had been 'adopted' by and Auntie and Uncle are all like, "Uhm yeeaahhhh, about that...")