There is no debug.keystore in .android folder

You can create keystore using this command..

keytool -genkey -v -keystore ~/.android/debug.keystore -alias androiddebugkey -storepass android -keypass android -keyalg RSA -keysize 2048 -validity 10000 -dname "CN=Android Debug,O=Android,C=US"

The debug.keystore is created automatically on first build that uses it.

If she is using Eclipse then go to Windows -> Preferences

Select Android -> Build

There you will see Default debug keystore: "Path"

See if you can locate it there.

According to the documentation, performing a build in Eclipse or using ant debug should automatically generate ~/.android/debug.keystore.

But in case this doesn't work, you can create one manually by running:

keytool -genkey -v -keystore ~/.android/debug.keystore -storepass android -alias androiddebugkey -keypass android -dname "CN=Android Debug,O=Android,C=US"