Thanks Jennie: What a great tribute!
I think that Dragonf1y brings up some good points about the blockiness (is that even a word?

) or Pixel-like look of anything that is cross stitched, especially lettering... Was there some reason that you chose Cross Stitch over other fabric mediums? The other issue that might be of some importance is that the finished size will be long and skinny in it's dimensions because the poem is only 4-5 words wide, but fairly long... Might be hard to do much but a custom frame (which is also a bit pricey), unless you do what Gayle did and make it into a wall hanging and you can put various borders to even it out a bit in its dimensions.
Also, can you give us an idea of what color scheme(s) you would like in any accent borders or other pictures/artwork around the edges? Just curious what sort of things your Mother or Grandmother thought were special. a certain type of flower(s), themes such as ocean, nature, animals, native american, nautical, lighthouse, etc... so we have an idea of something that would make this even more special, personal and meaningful...
Maybe I am overthinking this