maybe Belle needs a little red wagon, so you can take her in her cage with you, to see where you go... it takes time to rebuild trust.... also, don't give her a rubber hot water bottle~! she might eat it to ill effect. better to put a pound of dry beans in a sock and tie it shut, maybe even 2 socks, and heat it in the microwave, so she feels comforted. i have also heard that, like babies, the sound of a heart beat can be faked with a clock just outside her cage...
SeeSaw was running a Support Dog chat, she seems to know all the tricks. you might try asking her for some advice.. ?
{{{{{ Belle~! }}}}}
($15 at walmart)