Remi needs more friends so I'm down for this! :D I'd say they're probably at least familiar enough to be good acquaintances if not low-key friends or something? Remi has a bit of difficulty with letting people super close, but she is nice enough, and she especially likes feeding people. lol. It makes her feel useful. She's probably the one who is like, "YOU HAVE TO TRY THIS ONE! IT'S A NEW CREATION." She's passionate about her sweets. Also! Finnley was at Athena/in college the same time as Alex even though she's younger. So she might have some connections with him that way as well, even if she was a bit socially awkward.
And yes! I am good with these things as long as Emmy and Kit are as well for the respective families! Finnley is only a couple of years older than Rowena. She skipped some grades so she was quite far ahead in school, but she still would have been around in town and was friendly. She's also really likes art, so there's that! Remi is older, but it makes sense that Harrison would have tried for donations from the family. She's probably at least friendly/familiar.