I use cypress mulch wouldnt there be a risk of her eating the mulch
A little substrate won't hurt her, as long as it's not large chunks. If you're really worried, lay down some paper towels/blank newspaper over part/all the substrate then feed her on that.
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1.0 Husband
0.1 Colombian BCI (Satin)
0.1 Spider BP (Loki), R.I.P... We will never forget you...