Yeah, that was until I held it, and my mom also tried it at the shop. Didn't get it in the end because it was quite awkward to hold.

Seems like when the finally did something right, the partnership disappears.
No way man, my mom's hands are very small, she also didn't like the Arc S. Good thing I didn't buy for her yet. Most likely will look for something else. And yeah, the XS is quite heavy, but that is 99% due to the material used for the phone. There's never a pretty compromise between weight and build material, you either go full plastic like Samsung, or you do something like Sony.