Maybe your T was just trying to look out for you, not wanting you to get 'sucked in' by your mum again - perhaps she sees a pattern, thinks that it's inevitable you'll keep getting hurt, and that it's best to keep distance and protect yourself? She may feel it's important for you to get out and away from your mum in order for you to make progress and to help with self actualisation...

(Or maybes I'm just projecting because I've had my own mother issues! )