Is your water's pH that high even after sitting out 24 hours? That's really, really high. It's not uncommon for pH to drop after sitting out, and that's truly the baseline pH of your water.
Driftwood can be bought at your pet shop...and it looks great in a tank. Could you mom simply be against finding driftwood and adding it to your tank? Peat can also be put in nylon bags in a hang on back filter...it's not messy and easy to change out periodically. Again, best bought at a local petstore to ensure it's not contaminated with chemical (some peat in plant stores is chemical free, but you have to be careful).
I'm just wondering if your mom needs to be educated on driftwood and peat...they may sound really messy, but they're not. Peat will stain the water a tannish color depending on how much you have in there...but that is natural and the fish will look good in it.
However, if despite talking with your mom and maybe having her read some information on peat and/or driftwood and she still says no...well, she's your mom and you have to respect her wishes.
Eric