Leona Maguire was 10th and Olivia Mehaffey 15th in the Darius Rucker Intercollegiate on Hilton Head Island.
Leading after a first round 66, Arizona State's Mehaffey followed a second round 79 with a 75 to finish 10 strokes behind Arkansas' Maria Fassi on seven-over par with ASU 14th.
Duke's Leona Maguire shot rounds of 72, 74 and 72 to finish 10th, eight shots behind Fassi on five-over as Duke University was fourth with Lisa Maguire 46th on 227 after rounds of 76, 75 and 76.
Fassi shot a two-under 69 to win by two from Alabama's Lauren Stephenson on three-under as Alabama took the team honours.
Auburn's Julie McCarthy tied for 56th on 16 over 229 following rounds of 75, 78 and 76.
In the weather-affected Spanish Ladies' Amateur Championship at Montecastillo Golf & Sports Resort in Cadiz, Sweden's Frida Kinhult retained her title with a one-up win over Spain's Natalia Aseguinolaza.
The Swede beat the Lisburn's Paula Grant by the same margin in the last 16 after a series of weather delays forced organisers to catch up by reducing all the matches from that stage to the semi-finals to just nine holes.
Almost no play was possible on Friday due to high winds and flooding, but when the round of 32 resumed on Saturday, Grant beat Beatrice Walling of the Netherlands 1 up over 12 holes as Lurgan’s Annabel Wilson beat Denmark’s Sofie Kibsgaard 2 and 1.
Killarney's Valerie Clancy fell 3 and 2 to Lou Vrain of France in the first round while Wilson lost 4 and 3 to Romy Wickers of the Netherlands in the last 16 as Kinhult defeated Grant.
Spanish Ladies' Amateur Open scores
In the Spanish Amateur Open Championship, Billy McKenzie became the seventh English winner in 15 years when he beat compatriot Alex Fitzpatrick 3 and 2 in the 36-hole final at La Manga.
McKenzie snatched the last of 32 places in the matchplay draw on a countback from Dundalk's Caolan Rafferty but took full advantage to beat Fitzpatrick, who is the younger brother of European Ryder Cup player, Matthew.
Spanish Men's Amateur Open scores