You are right lol, looks like I completely missed that along with the whole update.
According to the wiki there is a cunnilingus scene accessable after raising her LP up to 70 after telling her you are seeing someone which is then repeatable on the after date scene with the handjob, and she will also be set as a girlfriend after. It is also apparantly dependant on samantha being friendzoned?
There are WAY too many prerequisites for Emma.