Leona Maguire scorched up the leaderboard with a superb six-under-par 65 on Thursday, but said it could have been even better as she coughed up some chances on the greens of Rio.
The Cavan 21-year-old produced a tremendous second day to finish on three-under, seven shots off leader Inbee Park of South Korea.
After starting with a three-over 74, Maguire was thrilled with her improvement, but revealed her sister Lisa pointed out some missed opportunities.
"Lisa said it easily could have been (10-under)," Maguire told RTÉ Sport.
"There'll always be those putts here and there but I'm pleased with that; it leaves me in good shape going into the last two rounds and hopefully I can do it again.
"I left a few out there coming in; on 15, 16, 17 I missed a few short ones, but I am very happy with that.
"That was the plan today, to try and go and get as many birdies as possible, shoot a low one and get myself back into it and that's what I've done."
Leona Maguire reflects on her stunning 65 today #rterio2016 https://t.co/NapuJBtcj0 #rtegolf https://t.co/TDaGlZUZb2
— RTÉ Sport (@RTEsport) August 18, 2016
With the leaders now in sight, Maguire is now hungry to keep the momentum going as she aims to launch a challenge for a podium finish.
"To get back into red numbers was big today," she added. "To give myself somewhat of a chance. I made up a bit of ground today and hopefully I'll keep clawing my way up.
"Every putt you can hole is going to make a big difference. It's probably only going to come down to a shot or two in the end."