Wish me luck - hoping to get a lhasa a new home???? Advice needed.

Way back in August I posted about someone who, unbelievably got a pup when she couldn't look after it....
http://www.dogsey.com/showthread.php?t=67345

Because the pup had to be kept alone in the lounge as was too much for the elderly daxie it was becoming snappy as was not being socialised.

Anyway, a couple of weeks ago the daxie was put to sleep. She had been wanting to do this for a long time, and was fine the day before, but now he's gone.

Now the young lhasa can come out, and he was doing much better. They have a stairgate across the lounge so he can't escape (he's very fast) and I actually got to meet him yesterday as before he was always shut in the lounge.

He is like a wee teddy bear, but very lively. Too lively for them surprise surprise.
So now we have an elderly couple, neither of whom can walk the pup, with a lively lhasa.
The dog has also developed a liking for biting feet. Again this lady is diabetic and has real problems with her feet (already lost a toe nail nearly a toe)and as the lady only wears pjs all day (just stays in bed) her feet are at risk. She fell the other day and now has to wear slippers as the dog is playing at her feet.
She also has odema in her legs (swollen legs) and so her skin there is also at risk as he jumps up.

She really is not coping and I think she is realising that. She has also told all of us different stories as to where the dog actually came from.

We have a carer with a lhasa. They did have a dobe but lost him a while back. We know she would love another dog and this pup's owner has finally agreed to let us put our 'feelers' out so tomorrow I have to tread carefully to see if she will give up the pup.

It will be best all round as:

1. The dog is not excercised as she cannot go out.

2. Her husband takes the pup in the garden, but he won't come in (probably as he's enjoying running around).

3. He is a physical risk to her, because of tripping, damaging her toes or legs.

4. He is a pup shut away and not seeing the world or getting socialised.

5. This lady relies on her hubby for everything. He is not well and it is only a matter of time before she may have to go into very sheltered or residential and will have to give him up then anyway....and by then he may well have a lot of behavioural problems.

6. The lady loves her dogs but treats them with food all the time, hence why her daxie was overweight and already has tonnes of treats for the pup already. (She herself is very obese).

So..... any advice about the foot biting? She says all she's doing is shouting at him ( she can't reach to smack thank goodness).

.... and any other points I can raise to get her to think about giving him up?

..... oh and what is the best way to do this so she doesn't/can't turn round and ask for him back again?

I think I'd try my best to sort of persuade her that the dog is too much for them in more ways than one, and they'd be much better off (thinking of the future too) without a dog. I certainly wouldn't come out with anything along those lines until you've got into conversation about said dog, you just don't know what their reaction would be do you? It's almost as difficult as the RSPCA must find it to try and persuade people to give their animals up who just can't cope! Good luck, this is going to be difficult I can see that!

Sorry, can't think of anything specific to say coz I don't know what they're like? YOu know, so I'm sure you'll know how to approach it and find the right words to do so.