I had a singer touch & sew ages ago and it worked great until the bobbins wore out. At that time I couldn't find new bobbins so I ended up trading it in. If it is the same bobbin...about an inch circle that screws apart, it has a little plastic nub on the bottom that can get worn. Check to see the condition of her bobbins. You might be able to find replacement bobbins on the net now?