Nicollet is now six-over 225 at the par-73 National Golf Club. She had two birdies, both on par-5s against five bogeys.
English rookie Charley Hull and Carlota Ciganda of Spain shared the lead heading into the final round.
Hull, 17, fired a four-under-par 69 for a three-round total of four-under, while Ciganda moved back into top position with a one-under 72.
Hull posted five birdies at holes one, five, 10, 13 and 14, before dropping one shot at the 18th. She has had a sensational start to her professional career this year, with ties for second in both the Lalla Meryem Cup in Morocco and South African Women's Open.
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Meanwhile, a bogey-free round of six under 67 put the defending champion Christel Boeljon right back in the mix as she finished just a stroke behind the leaders on three-under-par.
England's Trish Johnson held a share of the lead for much of the day but bogeyed the 14th and 18th slipping back into a share of fourth place with South African Lee-Anne Pace and Florentyna Parker of England on two-under-par.
Overnight leader Laura Davies recorded a five-over 78 and dropped back into a share of 10th.