I think
Rosalina is okay but I prefer
Rosemary Rosalind and
Rosamund
I dont see why not I knew a
Rosalia who went by the nn
RosieRosalina Alexandra - I like long names but tghis is too much of a mouthful
Rosalina Aliyah too many A's
Rosalina Monica - something not quite right but still the best of your combo's
Rosalina Dahlia the L sounds and the A endings clash a little
Personally I would try and chose a middle name that doesnt end in A
Rosalina AdeleRosalina AlixRosalina AliceRosalina BeatriceRosalina EleanorRosalina FelicityRosalina JaneRosalina MaeveRosalina MayRosalina PearlRosalina VivienneRosalina Valerie