Like ChiliD says, you have a valid point here.
I wonder if MR was just kind of thrown together by Chris in that she wanted the domestic life, even back then, so she may have just been going through the motions to be with John as she knew he wanted to be there but since in the UK, FM seemed to be thought of as "over" the minute PG left the band, that she may have thought FM wasn't going to last much longer so she didn't put much in to her songs in the beginning (thinking once the record contract ran out they'd break up and then have to just get "regular jobs" and then she'd be happy because "setting up house and having regular jobs" is what she wanted anyways) but then once she realized this was going to be her life, THEN she honed her style?
Just some thoughts though of course we'll never really know unless Chris says so herself which I don't think she will.
John