While I think bored Alicia running over to Mary is highly likely, I wonder if this is some "can the heroine overcome all this boring hoity toity nobility socialising BS and pro-actively engage with them rather than sit on the sidelines as she is right now" kind of event - like does Alicia understand what being with Patrick really means, and is she resolved for all the boring/shite parts that come with the good. So yeah, Alicia could well "fail" down to a just friends route and run to Mary out of boredom/anger at being ignored, but with all the "proper behaviour" Mary's "abuse" has taught her, she may well get up and join the group properly, or realise she's looking bored/sad/upset/whatever and switch to "politely waiting" mode or whatever she is "meant" to do in that situation. Maybe?
@R4nd0mus3r I bought that way after the hype died down in a cheapo humble bundle or something and still haven't got around to actually "playing" it - too many LNs and manga that I can't keep up with as it is, and games I'm behind on for the same reason (mega first world problems right here)