yes, quarantine her. the new enviroment and other fish could stresdsm her or keep her from settling in nicely.put her in her own tank and get her accustom to your routine,food,etc and she'll be a happy ray!
Should be fine. It should be put on the next flight. At least that is how they did my male marble when I got him. He was not put on the scheduled flight and when the attendant @ Continental here locally called Newark AP they told him it would be put on the very next flight. I did have to sit at AP for 4 hours waiting though.