Do you need to keep a consistent time? If not, can you check if she can do some other time slot on the other weeks?

I ran into a similar issue when my schedule changed -- T offered a ridiculous super early am slot (which works schedule wise but it's at a time before my brain starts functioning). Turns out she was operating under the assumption that having a consistent time is important to clients -- that's far from the case for me. So, now I just do a different day / slot / office every week depending on both our schedules and it works out well for me.

I'd also suggest having this conversation in person because sorting through different options over email can get tedious and time-consuming -- in person though, you can just check about all possible options in one shot.