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https://midlandusa.com/biztalk-software-download/

Their business product line does

Aah. In that case I would suggest you buy a radio dedicated to your house for the purpose of talking with your mother. That would allow you to use it on a regular basis, maybe even a nightly check in, and let her get used to the operation of the system. I would also suggest you try with two simple quarter wave antennas. But, prepared to go pick up a couple of yagis. By the way, as long as you are just talking line of sight directly to your mother, you don’t need much in the way of the radio. It doesn’t even need to be repeater capable.