This was a business relationship worth saving. However, if you're quicksand-bound and aren' t getting anything except colitis from collaborating, you have the wrong partner. I'd suggest cutting loose immediately. All the negative energy going into wishing pimples, pestilence and Pepcid AC on your partner is killing any positive outcome that might result from your work. The quicker you get out of a bad situation, the better.
Creative energy is extremely fragile.
Their negative creative team was ultimately responsible. You also want to make sure you don't sign on with someone whose agenda really is to fail. She had a great voice, wrote okay melodies and confusing lyrics. Freddie decided to collaborate with a lyricist I knew, who was well-established. They wrote six songs together - Freddie's tunes, Tom's lyrics.