lend her some money? or encourage her to pay more than the interest each month. if she cannot efford to then she will have to sell eventually

You misunderstand 'beneficiary' of a trust. No work involved at all for a child.

If your company wants to employ one of your children then that is a separate issue. You have to watch out for employing under 18s.
If you and wife both work for the same company then it is the company that employs people. If you work in separate companies then either or both (or neither) companies can employ them. Remember if a child is earning money then there are tax issues.

A business is just a concept not a legal entity or a structure. Only a legal person can own a property.

So you would have a company or an individual own the property. The company or individual could be owner as trustee or in their own right.

You would generally not run any business from the same company or in your own name, for asset protection reasons. So you would have one property owned by a company as trustee (probably). The children would be beneficiaries of the trust. You would then need to consider the terms of the trust to see if a beneficiary can use trust property and if so do they have to pay rent or could they live there free.

If they don't pay market rent and there is a loan on the property then the trust won't be able to claim tax deductions in full.

There may be also fringe benefit tax issues.

Great strategy if you have the cashflow to support it.

Wobs
http://www.austlii.edu.au/au/legis/cth/consol_act/antsasta1999402/s40.75.html

5 years according to the GST act

Why not borrow to pay investment expenses?

Yes, 5 years I believe.

I don't know the first thing about US property, you would need a lawyer over in the US if purchasing there.

You could try Morrows Legal in Melbourne. http://www.morrows.com.au

Your missing something Sundance.

If you default the lender can automatically take any security property.

If you had them separate it would be much harder and longer for them to get their hands on non security property. You would give you more time to get back on track or to sell etc.

If they are crossed and you try to sell one this will mean the bank will need to give permission for you to sell. They will need to revalue the remaining ones. If they have dropped in value or your LVR is unacceptable because of a change in policy then the bank can direct that you pay down the loan with the proceeds. This may not be a good point for deductibility reasons and for other reasons – such as needing the money.

I had a friend who had 2 properties crossed. He had a heart attack and was trying to sell them but the bank stuffed him up and he went bankrupt as a result.

Don't do it.

So a tenant wants compensation because they damaged their own car on a drve way that you don't own?

Why are you trying to contact the previous agent?

Just tell the tenants you are not responsible and won't be providing compensation