Car Alarms: Several Questions, brain box, unwanted guests

Question
Ok so this is my problem…..I have a soon to be ex wife who has personal space issues. She is always getting into my truck. So I bought and had a Falcon alarm installed. So now it just makes noise when she gets into it. I want to disable the factory auto-lock, and only use the auto-lock feature on the Falcon. This way her remote will no longer work.
My range is limited on the falcon; I have to be within 10 feet of the truck. How/Can I improve my range?
I would like to add a lock and alarm my tailgate; remotely control windows, auto start, and two way paging. Can this be done? What’s the least expensive way to do this?

Thank you for all your help.

Answer
First off, can't turn off the factory auto lock on cars. :>(
It's a feature that is preset by the manufacturer.

The Falcon will act as a drive away deterent if starter
kill was also installed, so she can't drive it.

However....

Her remote can be deleted from the factory system.
Go to the vehicle dealership, and have them re program
the remote bank (takes up to 4 remotes) so only your
2 tranmitters operate on this truck. Hers would
then be deleted by default.

So much for unwanted guests.

The Falcon has an antenna. It needs to be either stretched out
so that it's verticle and close to the windshield as possible
for best range. If it's only got a black pigtail antenna,
mount the brain box as high up under the dash cavity as possible
and away from any metal when extending the antenna.
That should improve the range for now.

Then if wanting to add all of those options, contact me by phone
and we can go over the options 1 by one to see if the
Falcon can control them remotely.

813 850-5000

I have an Ex too, and had to do this.
I understand my brother, totally.

ALARMTEK