The actual in game text says:
Just figured I'd add this for clarification. Velonara does not specifically say "many" or give any indication as to the number of kal'dorei that wish to return to the Alliance or remain with the forsaken.There are those among the kaldorei raised by Sylvanas' val'kyr who wish to return to their own. If Tyrande would have them back, they are free to go. The rest will be welcome in the ranks of the dark rangers.