Musical theatre tends to attract those with strong but unexceptional voices who just don't stand out . Melani is in another league.
I do think she would suit a girlband, but I mean that as in, it could be a way to launch her as an eventual solo . She is easily as talented and pretty as many who have done just that, and I think it would take the pressure she seems to feel off of her. When she tries to "show emotion " and "personality" , it is obvious that she is trying to be as sweet and likeable as possible instead of letting what makes her unique shine through. (Not sayingshe isn't sweet or likeable, she seems to truly be these things).
Right now, she lacks the confidence ,experience, and self awareness to really carry a show as a solo artist, but , unlike the typical musical theater performer, she has the potential to do it.
At the very least, she would be suited to high end corporate and wedding gigs, which are not the same as cheesy holiday camp or theater shows and actually could be called a career. I think , if she doesn't give up, there is still time for her to make it as a solo artist.I think a girlband would be perfect for her to move forward IF the rest of said band is made up of girls who are also talented and likeable, and they get good producers and songs.There is a place in any girlband where her shy, sweet personality would be an asset.
Launching her on X FActor after giving her an edit like they have would also work( She's be a given for wildcard of "5th judge" if the rumor I heard was true that they kind of planned this this season. She fits the description of the girl I got. Take with grain of salt, source was good but this was uncertain and I heard it early in the year), but I think a girlband would be a great route for her.