Complex sentence: Peters receives financial support from donations made through the Family Care Foundation (FCF), which former members of The Family assert is an umbrella organization for charity fronts with inextricable ties to The Family International.
Split into simpler sentences: Peters receives financial support from donations made through the Family Care Foundation (FCF). Former members of The Family assert that the FCF is an umbrella organization for charity fronts with inextricable ties to The Family International.