I realize I'm the one dragging out this post after most have my questions have been answered. But landlord just emailed me this with a request for us to sign. Made me just start laughing out loud even though I'm here all by myself. WHAT A JOKE.
Lastly, I think if you enter into a mortgage you should be forced to have an IQ test. Because man is she an absolute idiot.
I love the use of the word promise. But, honestly, I would feel more secure with pinky swear for a legally binding document.
LEASE ADDENDUM
This is an Addendum to the Lease entered into on 10 /1 / 2011 between (tenant) and (landlord) for the premises located at: xxxxxxxxxxxxxxxxxxxxx
This Addendum shall be and is incorporated into the Lease dated 02/ 02 /2012 between Tenant and Landlord. Tenant and Landlord agree to the following changes and/or additions to the Lease:
If the property sells and the new owners would like to take over residency at closing then the lease will be terminated. TENANTS will move out with my moving assistance.
The lease will be terminated at closing of the property.
Landlord promises to provide a 30 day notice to tenants.
This Addendum is to be effective as of (m/d/yr) 02 / 02 /2012
Wow... that is the worstly written piece of s**t I have seen in a long time. I can't believe she would actually believe you would sign it, and even if you did that it wouldn't be easily contested by a real lawyer

I would be looking at either, not signing it or ammending it to be very specific. i.e.:
When the lease ends (the exact day and time), is it end of day of closing etc.
The landlord
shall give 30 days notice prior to settlement,
The landlord
shall give 1 days notice prior to entering into an agreement to sell,
The landlord shall pay
all cost acrued by the tenent associated with vacating and relocating to a new premise including but not limited to, removal company cost, van/truck hire, tempory storage costs, etc.
The landlord shall inspect the property once vacant within 1 days notice from the tenant,
The landlord shall return the security deposit (subject to original lease terms) within 3 days of the final inspection of the property,
and anything else you think is reasonable (maybe get someone with a bit more knowledge in property law to look into it for you).
The lease (and addendums) are the first point in the contract and it should be by exception when it falls back onto your states normal tenancy terms.
Send it back and see if she blindly signs it as she seems to want you to do
Just thought of another one. get her to put up the deposit on your next place while waiting for you security deposit from her back. That is one I always found a bitch when renting/moving - having to pay the deposit on the next place before you got the last place's deposit back! (I always got my deposit back because I looked after the places)