Yeah, Minthara's romance has always been in a pathetic state and the "new" kiss option makes only a smidge of a difference.
I want to see if I'd get the alurlssrin line in a new playthrough as some changes only apply to newer saves, but at this point I've gotten tired because I'm starting to feel like an unwilling playtester for this game. Once again I'd like to urge everyone to send bug reports about Minthara since there are no guarantees Larian will check this particular thread.