A mother and her two daughters are in stable condition after a head-on collision on Saturday.

A 63-year-old female of South West Oxford who was driving an SUV travelling southbound on Highway 59 with two 36-year-old female passengers, crossed over the centre line and struck a pickup truck towing a boat head on.

The two 33-year-old men in the pickup truck, both from Kitchener, suffered minor injuries.

As of Sunday, the SUV passenger who was previously airlifted due to her injuries was listed in critical condition. The other two people in the SUV are in stable condition.

"I would like to thank all the emergency response workers and Good Samaritans that assisted with this collision. Their dedication and commitment to our community is unwavering. I would also like to extend my thoughts to the drivers/passengers and family members affected as a result of this incident," said OPP Insp. Tony Hymersin a statement.

Highway 59 between Gunns Hill Road and Old School Line, which was closed due to investigation has since reopened.

OPP say charges are pending.