Complex sentence: Although she was spending more time with her children, Beverley continued to contribute to John's solo projects, however, John's increasingly'rock and roll' lifestyle and in particular his heavy use of drink and drugs led to the breakdown of the marriage.
Split into simpler sentences: Although she was spending more time with her children, Beverley still continued to contribute to John's solo projects. However, John's increasingly'rock and roll' lifestyle and in particular his heavy use of drink and drugs led to the breakdown of the marriage.