This woman knew Jesus.  Look how she approaches him in the different versions of the story.

Matthew 26	Mark 14	Luke 7
6  While Jesus was in Bethany in the home of a man known as Simon the Leper,  7 a woman came to him with an alabaster jar of very expensive perfume, which she poured on his head as he was reclining at the table.  8 When the disciples saw this, they were indignant. "Why this waste?" they asked.  9 "This perfume could have been sold at a high price and the money given to the poor."  10 Aware of this, Jesus said to them, "Why are you bothering this woman? She has done a beautiful thing to me.  11 The poor you will always have with you, but you will not always have me.  12 When she poured this perfume on my body, she did it to prepare me for burial.  13 I tell you the truth, wherever this gospel is preached throughout the world, what she has done will also be told, in memory of her."	3 While he was in Bethany, reclining at the table in the home of a man known as Simon the Leper, a woman came with an alabaster jar of very expensive perfume, made of pure nard. She broke the jar and poured the perfume on his head.  4 Some of those present were saying indignantly to one another, "Why this waste of perfume?  5 It could have been sold for more than a year's wages and the money given to the poor." And they rebuked her harshly.  6 "Leave her alone," said Jesus. "Why are you bothering her? She has done a beautiful thing to me.  7 The poor you will always have with you, and you can help them any time you want. But you will not always have me.  8 She did what she could. She poured perfume on my body beforehand to prepare for my burial.  9 I tell you the truth, wherever the gospel is preached throughout the world, what she has done will also be told, in memory of her."	36 Now one of the Pharisees invited Jesus to have dinner with him, so he went to the Pharisee's house and reclined at the table.  37 When a woman who had lived a sinful life in that town learned that Jesus was eating at the Pharisee's house, she brought an alabaster jar of perfume,  38 and as she stood behind him at his feet weeping, she began to wet his feet with her tears. Then she wiped them with her hair, kissed them and poured perfume on them.  39 When the Pharisee who had invited him saw this, he said to himself, "If this man were a prophet, he would know who is touching him and what kind of woman she is--that she is a sinner."  40 Jesus answered him, "Simon, I have something to tell you." "Tell me, teacher," he said.  41 "Two men owed money to a certain moneylender. One owed him five hundred denarii, and the other fifty.  42 Neither of them had the money to pay him back, so he canceled the debts of both. Now which of them will love him more?"  43 Simon replied, "I suppose the one who had the bigger debt canceled." "You have judged correctly," Jesus said.  44 Then he turned toward the woman and said to Simon, "Do you see this woman? I came into your house. You did not give me any water for my feet, but she wet my feet with her tears and wiped them with her hair.  45 You did not give me a kiss, but this woman, from the time I entered, has not stopped kissing my feet.  46 You did not put oil on my head, but she has poured perfume on my feet.  47 Therefore, I tell you, her many sins have been forgiven--for she loved much. But he who has been forgiven little loves little."  48 Then Jesus said to her, "Your sins are forgiven."  49 The other guests began to say among themselves, "Who is this who even forgives sins?"  50 Jesus said to the woman, "Your faith has saved you; go in peace."

Where does this take place?

Why did the woman come to Jesus?

What do we know about her?

How did the disciples react to this?

How did Jesus react?