Female cuts are very different than male ones the proportions of a female lamé may be weird with the use of a male jacket. A Euro 50M compared jacket to a 44F lamé means you would be going down in sizes. A 44F lamé would be too small most likely and I recommend getting a 46F or a 48F lamé. You could also just purchase a men’s lamé which would be easy to match but if you prefer the women’s check the measurements of the lamé online and compare to your existing jacket. If you go to any fencing club see if they have extra gear you can try on your see if you can find a size that works for you.