I've had some Krav instruction. They teach fighting from all ranges, not just weapon specific.
Basically it goes from avoid conflict, to strike mercilessly anywhere and everywhere you need to to put your opponent down (eyes, throat, groin), to get the **** out of there.
Which is why if you feel like your mom should learn something to defend herself, it is probably the one that makes the most sense.
You really want mom dukes checking kicks?
Sounds like it was a good fight. Reading that Masvidal won Rds 1+3. Ben won Rd 2. Rd 4 was close. And Ben outworked him in Rd 5.
Which makes sense given that Jorge was supposed to fight a 3 Rd fight initially before he stepped in for Alves.