Being in business or providing any type of professional service doesn’t preclude caring. Please, let’s not generalise. Caring is part of human nature and is not something one pays for. At least your T was honest (and reassuring, no?): you do pop up in her mind from time to time.

Clients only have one T but Ts see many clients. It is not reasonable to expect them to invest a lot emotionally into their many, many clients. They’d get burnt out and wouldn’t be a good T anyway.

Also let’s be frank, there tends to be more of an emotional investment on clients’ part. Actually, that may not even be true but Ts (the good ones) know how to manage any caring/feelings they have for clients. Some prefer to err on the safe side and who can blame them.