
Did you first get her used to being in a different room? Praise for when she's quiet ( something you cant do if you are out

) and always try to get to her when she's not making a sound and give her a treat or quietly say " good girl" then leave her again.
When this is going well, after a tiring play session, into bed with a chew then leave.
it's worth the trouble working up slowly and getting her used to separation, within the house,whilst she knows you're there.