Well, I wouldn't recommend the top of your foot for your first then unless you think it might be your last. This is my second and the other, just as small, was in an area where it didn't hurt so bad. I said I did this cause I was bored but really everything has a meaning, as this does and I think a tribute to your mom would be great. Done tastefully it can be that daily reminder, even though you won't 'need' it to remember, but you can associate it with better times and with someone whom I'm sure was a source of strength for you. Watch a couple of episodes of LA or Miami Ink sometime and you will see how great and personal this kind of tribute would be. 'See' you later!