This seems to be the Marie who was a patient of the French Hospital, died 1768, born circa 1686
The Artillery French Huguenot, Spitalfields,
Marie Lalemand, born 17 August, baptised 26 August 1721daughter of Robert and Marie Lalemand, baptised by Monsieur Barbauld, witnesses Philippe Caout and Marie Maison.
Royal Bounty Payments
Robert Lalman, his wife & child, commoners, ordinary payment, Petticoat Lane District, department of London and Spitalfields 2 pounds 11 shillings 1721-3
Robert Laleman, 50 years old, his wife and one child, commoners, ordinary payment 1 pound 2 shillings 6 pence Petticoat Lane District, department of London and Spitalfields 1727-8
Robert Laleman, Commoner, ordinary payment 1 pound 14 shillings Petticoat Lane District, department of London and Spitalfields 1728-9
The dates would certainly have fit very nicely for her and Robert to be parents to Peter/Pierre, but the evidence there seems to strongly suggest they only had the one child Marie, who was later married so did survive.