Remote Employee unable to connect organization internal network via VPN

A few weeks ago, I had a remote employee unable to connect to organization VPN. 

Initially, I got the basic user information and determine her home network had the same network as organization internal network, so her computer had number of ways knowing where to the send the traffic beyond what the administrative distance and routes said. 

So I made a persistent route on her machine that was only active if the VPN interface on her machine was active and set the administrative distance for that route to a lower distance than the default route, pointed that route to the switch over the VPN and boom, she could then connect to the network on that one specific IP which is what she needed (also had to turn off setting the VPN as the default gateway so not all of her traffic was forwarded).

The command on her windows machine looked something like:
route -p ADD 10.1.1.128 MASK 255.255.255.255 10.10.254.254 METRIC 1 IF 38