the pink planter is my lay bin. 50/50 mix of organic soil and washed play sand. Could also do 100% play sand. That planter pot is a 10inch filled about 6 inches high
You want to look behind the foot right where the toes meet. Would compare it to our heel. Thats where it would be. I also see no bulge. Believe you have a lady :)! Can also see the right angle on the left foot in picture. 90% sure female.
Thanks for the update and glad to hear! I was debating taking a road trip to D.C. my sister lives there it would have worked out. Glad hes still close thats awsome!