Is it ever advisable to tell players about "content" they missed out on because of their actions or inactions? For example, in the game the other night, one of the players has been making nice (while interestingly succeeding all disquiet rolls, or I'm doing something wrong there) with a promethean.
During a combat scenario said promethean would have come to the characters aid, but this player decided to abstain from the combat (for plausible RP reasons), but this also meant the group didn't get the aid of a fairly powerful NPC. The outcome of the combat was always fixed, as it was more of a plot hook, than realistically dangerous. My question is should I tell her, and the other players, that by abstaining she lost help for the group? Should I just let the mistakes (mistakes meaning missed opportunities) pile up, as that is part of the game?
update: If there's potential information that could still be of use in the future should I bring that up? e.g. the promethean may of yet be of use to the characters. I'm not sure if I should retain the information that it was a missed opportunity caused by RP because that makes something that I've been leaving as vague (though in this case, I did make a note that the Promethean was able to move the Fae in a futile attempt to block the Fae, at that point the PC's had basically lost the fight, so I didn't bother rolling for the Promethean, or pulling out her powers, considering retconning that scene so that it's more obvious).