Have you definitely checked your inventory backpack & there are 6 Pigeons in there?
Try leaving this scene through the entry/exit point....then return to the old woman.
Try to completely close the game & restart it.
Try clearing your cache, cookies, history, etc. (If you can)
You can also try uninstalling & reinstalling the game, Facebook, Google Play, browser, etc. (But ONLY do this if you have a player ID and game progress registered either with your email address or with a Facebook account).
If the old woman still refuses to take your 6 Pigeons....then you will need to contact Pixel support directly.
There are 3 different ways to contact PIXEL SUPPORT.
Remember to check your email spam/junk folder for replies
Do NOT send multiple Pixel support tickets in quick succession...otherwise their spambot might eat them
1️⃣ You can contact Pixel support directly through your game settings menu
2️⃣ You can also contact Pixel support directly through this link
Do NOT type in the white search box....scroll down to the categories written in BLUE.
3️⃣ You can also send an email to Pixel Support directly through this email address
If you contact Pixel Support directly via the email address below....you MUST include your player ID number....which can be found in your game settings menu