Well, personally, I don't think it matters on the age, but the fact that you are taking care of your mother, even by being in the same city as her. I don't know how old your mother is, but from what I hear, most people usually put their parents in nursing homes and put the burden of taking care of them on someone else.
Although you are not under your mother's rule anymore, it does help if you listen to her once in a while (and those once in a while are hopefully at the right moment). I mean, she is only going to rule over you totally for so much longer. She is doing this because she cares for you and she needs you to be there, not because she hates you. How many times has your mother left you at home alone on the weekends, when you were feverish, while she went shopping, or something else, un-important. Based on your answer to this, you should answer your original question of whether you should go or not.
Althought your mother's health is an important issue, you also mention that you had some important forms to sign the next weekend. Now, I don't know how important these forms are, but if the only time that the financial advisor is able to meet you will be next week, then you should re-schedule your things for him, because, after all, he is helping you. I don't know how long the financial advisor will be talking with you, but maybe you could go for a one day trip (note: I don't know any of the US's geography, and I don't know where you live, and I don't know how you are travelling, how long the travelling is going to be for, and how many hours are actually travelling, and how many hours are in NC) Unless you can do without his help, I suggest you postpone this trip till later, if you really want to go.
Hope this helps.