The loosehead prop, who will earn her 47th cap against the Scots, comes in for Bath Ladies' Caryl Thomas who moves to the bench.
Both sides are seeking their first win in the tournament after Wales lost narrowly to England at Cross Keys last weekend while Scotland suffered a heavy defeat to France.
While Scotland have made seven changes to their starting line-up, Wales head coach Kris de Scossa has given his young team a vote of confidence and kept his changes to a minimum.
"We're viewing this Six Nations as a platform to move forward and this is the first stage in putting those building blocks into place. We're sticking with the squad which gave such a solid performance against England and we will re-look at the extended after the Scotland game."
Wales Women v Scotland, at Burnbrae, Sun 12 January (KO 2pm)
|15||Aimee Young Bath Ladies|
|14||Charlie Murray Neath Athletic|
|13||Adi Taviner Neath Athletic|
|12||Elen Evans Dolgellau|
|11||Caryl James Cardiff Quins|
|10||Elinor Snowsill Cardiff Quins|
|9||Amy Day Cross Keys|
|1||Jenny Davies Waterloo|
|2||Rhian Bowden Cross Keys|
|3||Catrin Edwards Cardiff Quins|
|4||Ashley Rowlands Wasps|
|5||Shona Powell Hughes Neath Athletic|
|6||Lisa Newton UWIC|
|8||Jamie Kift Cross Keys|
|7||Sioned Harries UWIC|
|16||Lowri Harries Neath Athletic|
|17||Caryl Thomas Waterloo|
|18||Vicky Owens UWIC|
|19||Sian Williams Bath Ladies|
|20||Laura Prosser Cardiff Quins|
|21||Awen Thomas Cross Keys|
|22||Kerin Lake Neath Athletic|