Thank You email

[nowhere]

Do you send thank you emails?  Or do they seem too impersonal?

My situation:  I just dealt via phone with extremely rude person (Ms Meanie) at the membership department for a museum we are members.  I called back and spoke to the head of the membership department (HOD), and she was very nice, profusely apologized, and answered my question (the purpose of my call) easily.

I want to thank HOD for taking the time to address my concern.  Do you think it would be appropriate of me to thank her via email or is this not necessary?  Should I instead send a written thank you card?  Or is it unecessary to do anything since she is the boss and did what she is expected to do?  I always notify companies when I have received extraordinary services, but I don't know if this falls into the same category. 

[FROGGIEJ]

I think an email is a happy medium.  It's a brief quick note to say 'thanks for helping me out'.
I like that idea because it's good to acknowledge her help but I think a handwritten card would be overkill, but that's just my two cents.

[nowhere]

but I think a handwritten card would be overkill, but that's just my two cents.

Yeah, I thought so too but had to put it out there to make certain. 

Thanks! 

[MineralDiva]

I too would send a quick email to thank her for her assistance.