I was going with the assumption you'd request the OTR by meeting a Listing. Has she addressed why you didn't meet a Listing? She should be able to look at your test results and identify the issue.

If they're claiming you can do your previous work, then an OTR likely won't be successful unless your medical records address your functional restrictions and limitation if you're trying to qualify via the GRID.

As of right now, my assumption is they're claiming you have a RFC rating of at least Light. Your age at application isn't the issue, it's your age at your Alleged Onset Date. With a Light rating, if your 54 at your AOD you will be denied via the Grid.

Here's the DOT title the VE would probably use which has a strength rating of Light: 187.167-106 - MANAGER, FOOD SERVICE (hotel & rest.; personal ser.) - DOT Dictionary of Occupational Titles Job Description and the Light Grid: Light Work Grid Rules | Medical Vocational Guidelines | Light

Don't insist on the OTR prematurely. The attorney should be able to explain to you clearly what her strategy for approval is, if you should amend your AOD to your 55th birthday, etc.