M.D.
I would contact irobot and the battery should be under warranty. My roomba is 2 yr old and the battery doesn't last as long as it once did. I had problems with my scooba (also 2yrold) and they fixed the battery thing under warranty and haven't had any problems with it since.
Both my kiddos (4&7) were terrified of the vaccuum cleaner when they were little, but now they aren't as scared of the vaccuum. It is just the pitch of it because my vaccuum is LOUD!!! so she should outgrow it but it may take awhile...
good luck!