I agree with George. Giving away one's possessions is typical pre-suicide behavior. A change in behavior from verbally expressing hopelessness to being "chirpy" is also typical: it can mean that she's made up her mind to do the deed, has a plan worked out to do it, and is now at ease knowing that her inner turmoil is about to end.

I'm willing to be alarmist here. DO NOT DELAY. Get her some professional help NOW, just in case. If she lives alone, don't leave her alone. If she lives in an environment that is driving her toward suicide, do anything you can to get her out of it. TODAY.

SharonA