I actually agree with you and my concern would be would she get the attest experience or would answering the phone all the time prohibit her. Being direct with the partners about the specific duties and daily agenda would be a good thing. I use to work for a Credit Union as an accountant and it was really hard answering the phones all the time while trying to get my work done. But answering phones might be advantageous depending on the service or questions that need to be answered.
I would say go for it if this works in your favor and the partners will sign off for you. Maybe ask them if they are able to have you do or go over the areas on the Attest form just to make sure. If they are flexible with your schedule that is great as well and makes a difference. Have you thought about finding a job that’s fully remote as well? There are CPA firms that hire fully remote employees you might just need to go through a job recruiter to help find it.