If you're doing that, looking at mixte/dropped toptube frame will probably open up more options to you, in terms of being able to get a slightly larger frame but still have standover clearance.
When I was building my gf a bike I was looking for a similar sized road frame and finding nothing worthwhile, I ended up getting her a ladies Trek frame that I think is around 50cm. The seat is slammed but there's plenty standover and the length is better.
^This,
If you're doing that, looking at mixte/dropped toptube frame will probably open up more options to you, in terms of being able to get a slightly larger frame but still have standover clearance.
When I was building my gf a bike I was looking for a similar sized road frame and finding nothing worthwhile, I ended up getting her a ladies Trek frame that I think is around 50cm. The seat is slammed but there's plenty standover and the length is better.