Neptune's Daughter by Beryl Kingston
'...that's how you see me is it?' she said. 'Good child care.' Eleanor gave her an honest answer. 'The best,' she said. 'I mean, what can be better than the baby's own grandmother?' 'The baby's own mother,' Gwen said. When Gwen MacIvor is widowed she surprises everyone by embarking on an entirely new life. She buys a derelict tower by the sea, sets about restoring it, takes a lover, and a job, studies astrology and learns to enjoy life - at long last. Unfortunately, her daughter Eleanor - a successful executive of 30+ - has other plans for her. For Eleanor is pregnant and intends to go back to work as soon as her baby is born. Naturally she assumes that her mother will bring the baby up. It is not an assumption Gwen shares.