Complex sentence: Her daughter Anna (born 1973) and her granddaughter Nellie (born 1995) are also actresses, as are her half-brother Pierre Besson and her stepmother Ursula Karusseit, too.
Split into simpler sentences: Her daughter Anna (born 1973) and her granddaughter Nellie (born 1995) are also actresses. Also her half-brother Pierre Besson and her stepmother Ursula Karusseit are actors, too.