Ok scent wise I will stick with the scent I know best to use which is cloves.
Gather some cloves (the ones you would use for cooking) a killner type air tight jar, some scraps of fabric or better still sticky Velcro which is superb as you can stick it up anywhere. This link explains how to prepare your scent items and the sort of size you are aiming for initially and they take a few days to take on the scent fully.
Target Odours — scentworkUK.com
You will also need about six identical items, things like housebricks, plastic pots, terracotta plant pots are all ideal to use to start with. Get all you gear ready and your scent brewed and we can move onto first step when you are both ready.
My Molly news is not good

it is looking like she has some level of kidney damage although I am not clear at the moment if there is anything we can do about it. We are back to the vets on Thursday for more tests.