Hmmm...
Asherah is actually really nice. At first I thought it was like
Asher with -ah tacked on to make it look more feminine, but now it's totally growing on me! I'd want to pronounce it ah-SHARE-uh, though, not uh-SHAY-ra or whatever it says in the comments. Any name with the "shay" sound doesn't work for me, considering what my name is. I like
Asherah Juliet best, with
Cher as a nn.
As for
Montserrat... ♥ I've been in love with this name for quite a while now, I think it's gorgeous. I don't mind
Sarah as a nn, but I'd personally spell it Serra.
Monty could be another (infrequently used) nn for fun. As for the combos... they're all nice, but I've always perfered to pair Catalan names with other Catalan names.
Anais Montserrat is my favorite, but having it the other way around is good as well.
Montserrat AnaisMontserrat ClaraMontserrat CaterinaMontserrat Joana (zhoo-AH-nuh)
Montserrat LaiaMontserrat Llora