because Odysseus is avenged already.
Athena helps Odysseus as well as Telemachus
She does
Telemachus first thinks that Odysseus is a beggar, thanks to Athena's disguise of him. After Odysseus' transformation, Telemachus believes him to be a god, until Odysseus tells Telemachus of his identity.
To find his dad, Odysseus.
Athena allows the suitors to offend Telemachus and Odysseus to test their patience, courage, and resolve. By facing adversity and showing their true character, Telemachus and Odysseus prove themselves worthy of Athena's help and guidance in their quest to reclaim their kingdom.
At first Telemachus thought Odysseus was an old beggar, but when Athena made Odysseus appear majestic, and instantly changed his clothing, Telemachus thought he was talking to a god.
Athena advises Telemachus to leave Ithaca and travel on a journey to find his father, Odysseus
Telemachus and Athena
Telemachus originally thought Odysseus was a god because Odysseus had magically had his appearance changed right before Telemachus. However, Athena was responsible for the sudden change in appearance.
Athena transforms Odysseus and makes him appear majestic so much so that Telemachus mistakes Odysseus for a god. Odysseus tells Telemachus that he is indeed his father, and it takes a little time for him to convince him of this.
Athena encourages Telemachus to go on a journey to see if his father Odysseus is still alive and when he finishes this journey to go and kill the suitors.
Athena tells Odysseus to reveal his identity to Telemachus, as there is no point in keeping it hidden from him. Telemachus can also help his father on his quest for vengeance, as he is completely trustworthy.