Sure, but It does not actually change things. Same as other scenarios for telepsychology when the client is outside Atlantic.
She would have to check with Mexico since they may consider it practice there. NSRP has jurisdiction on her work she does in NS, but it is possible that Mexico may consider working with the client to be practice there. If they were okay with it then we would not have a problem as long as she followed the NSRP telepsychology standards but this would be conditional upon making sure it was okay with Mexico.