It is my understanding that flowers are an acceptable gift for Hanukkah (Festival of Lights). In the United States, flower arrangements containing white or blue flowers are sent for Hanukkah. You can, also, include a candle in the flower arrangement to symbolize the importance of lighting the Menorah. Although, Hanukkah is not a big gift- giving holiday, I am sure your friend will appreciate the gesture and interest in her culture. Growing up I had friends who lived in Anaheim California who were Jewish. In their family, family members received a gift each night of Hanukkah. They, also, I believe received fruit baskets (kosher of course) and Hanukkah flower arrangements from friends and other family members.

Just a little FYI

Hanukkah is a beautiful traditional celebration that begins on the 25th day of Kislev of the Hebrew Calendar. As a result, the celebration can begin in November or December: but will always be eights days. Hanukkah is celebrated by lighting the candles of the Menorah each night. If I remember correctly, one candle is lit each night for eight days. The lighting of the candles symbolizes the triumph of spiritual values of Judaism. This tradition originated from the re-dedication of the Temple of Jerusalem by the Maccabees after their victory over the Syrians. Their perseverance was demonstrated by the miracle of oil. The eternal flame of the temple burned for eight days on one day’s worth of olive oil.

You can learn more about Hanukkah at Judaism 101 or Jewish Outreach Institute.