She wants to earn commission for the help she’s giving you. And she has helped you. Right now she’s giving you info for free (like what we do here), but she’s in business. The fee could be because she offers lots of service while making less in commission because she’s a military specialist. If you’re getting lower rates, so is she, but she’s an expert in this.
I’m not telling you to switch to her, but if you aren’t going to pay her (the fee or switching your reservation to her) then please stop asking her for advice. She’s a businessperson.
The
MDE thing....I think that’s how some or all TAs make arrangements for you. If you wanted her help I don’t think it should be an issue.