A pannykhida (memorial service for the dead) is not served for a person who has been recognized as a saint. We no longer pray for the saint, but rather we ask the saint to pray for us. I would suggest that if you wish the to ask St Xenia for her help and intercession that you have your priest say a molieben before her icon. Or if you are so inclined, go to Petersburg and have a molieben said there, before her relics, on your behalf.
Fr David Moser
I am sorry but this is not the solution I am looking for. I know what panikida is, but this is what she asked from people that needed her help. I don't have the financial means to go there. That's why I asked for a local's help.
On her grave it is written : "Whoever has known me, may he remember' my soul for the salvation of his own soul."
She was a special saint, a fool-for-Christ and she demanded panikhida from people. I have read the life of Saint Xenia and this is what she asked from people. I have read a book with her miracles and some of them are available at www.pravoslavie.ru/english/44559.htm
"A civil servant, Nicholas Selivanovich Golovin, had lived in Grodno approximately until 1907. He often experienced unpleasantness at work. He came to Petersburg to put his affairs in order, but they became even more entangled. Golovin was very poor, caring for his elderly mother and two sisters. In despair, he walked along the streets of Petersburg, and, though he was a man of faith, the thought to throw himself into the Neva stole into his soul. At this moment, some unknown woman stood in front of him. He was struck by her appearance, which was reminiscent of a poor nun. "Why are you so sad?" she asked. "Go to the Smolensk Cemetery, serve a panikhida [a requiem service] for Xenia, and everything will be settled." After these words, the unknown woman disappeared. Golovin fulfilled the advice of the mysterious nun, and his affairs were unexpectedly settled in the best manner possible. He joyfully returned home to Grodno."
"A colonel's widow arrived in Petersburg to enroll her two sons into the Cadet Corps. She did not succeed in this. The money borrowed for the trip had come to an end, and the widow walked along the street and wept bitterly. Suddenly, some woman of the common people came up to her and said: "Serve a panikhida for Xenia. She helps in sorrows." "Who is this Xenia?" asked the colonel's widow. "The tongue [that asks the way] will lead to Kiev," she answered, quickly vanishing.
Indeed, the colonel's widow easily learned who this Xenia was. She served a panikhida for her at her grave in the Smolensk Cemetery, and shortly after received the unexpected news that both her sons had been accepted into the Cadet Corps."