Student or Learner
Melinda was trying to persuade the dead kid's mother to talk to the dead kid, but due to her trauma, she is rejecting the proposal, so Melinda was rejected and after coming back home says to her husband like this.
Is tough "difficult" or "STRICT or firm" in this case?
mel- I saw Kenny's mother today.
husband- Whoa. How'd that go?
mel- Oh, she's tough.Very tough.
Any of the synonyms you mentioned could be used. Based on the quote
you provided I would guess that 'difficult' is the best choice. You could also use 'stubborn.'
'Tough' should not be used like this in formal English