Complex sentence: Alternatively it has been suggested that White was considerably in debt to Beswick, a debt that would have to be repaid after the funeral, which was avoided by her embalming, but Beswick's will names Mary Graeme and Esther Robinson as her executors, not White.
Split into simpler sentences: Alternatively it has been suggested that White was considerably in debt to Beswick, a debt that would have to be repaid after the funeral, which was avoided by her embalming. However Beswick's will names Mary Graeme and Esther Robinson as her executors, not White.