Unique tough short girl's name

Exciting! Here's what I think of the names above, followed by some ideas of my own:

Ruby - beautiful, quite classic. Works well in Dutch, but also in English.
Mace - not beautiful, sounds like a boy's name. Unique and tough though.
Lune - beautiful, but there will probably be confusion with Luna. Not really tough, but unique.
Mia - not really tough either, but very nice! Short and sweet.
Ieva - is it Ieva or Leva? For Ieva I'd write it as Iva. Then it's beautiful. Leva is not beautiful.
Juno - really cool, tough name. Nice!
Jila - not so nice. Don't like the pronunciation. I prefer Mila or Nila. A bit made up.
Juna - nice, but definitely not unique.

A few more ideas: Lova Neva Nola Mae Jula Nové Ize Ide Loa Loïs Jade June Lena Caro Cleo Dalí Espen Philo River Robin Tatum Rio Alix Dido Eliz Malin Ronja Hagar Isé Madée Danaé Juni Juniper Mares Nim Lexi Levi Malú Niki Coco Dani Dila Deze Eden Ela Ellis Esra Isla Meis Nika Niké Rhodé Reeza Tamar Yentl

I think Mia, Lune, and Juna from your list are really beautiful.
Maybe also:
Alix, Amé, Arwen, Aster, Ava, Bodil, Cato, Chloë, Cilou, Clea, Dana, Dané, Dani, Ediz, Efin, Elif, Elora, Esra, Eydis, Faya, Febe, Ilea, Ilou, Imke, Imme, Irsa, Isha, Isra, Jade, Jolé, Jula, Julin, Julot, Juul, Karo, Kim, Lexi, Lhoé, Loé, Lorin, Lot, Lova, Lua, Luus, Malin, Mea, Mex, Mint, Nara, Neva, Niké, Nilou, Nim, Niva, Noé, Nola, Nuri, Orla, Phae, Pip, Quinn, Rava, Reva, Rhodé, Rika, Riva, Rox, Sare, Sia, Suri, Suze, Tove, Tris, Trix, Vida, Yentl, Zare, Ziva, Zola

Lovely names on your list!
I think Ruby sounds great, but it’s pronounced Ruubie, not Roebie.
I think Juno is really cool!
Lune too, and much nicer than Luna.

Other names that come to mind (maybe some have already been mentioned):
Nola, Jolie, Oona, Belle, Lilou, Milou, Nila, Ella, Kate, Nina, Loua.