A Reason for Being(1989)

Penny Jordan

She'd unleashed his fury with her jealous lies

Ten years ago teenage Maggie had fled her beloved Deveril House--driven off by Marcus Landersby's savage outrage. Her falsehoods, an attempt to hang on to Marcus, her attractive older stepcousin, had backfired horribly.

Now Maggie had returned to her home. Reluctantly she'd been drawn back by an urgent letter from Marcus's schoolgirl halfsisters, Susie and Sara.

The two motherless girls desperately needed her. But Marcus would never tolerate Maggie's presence.