My kids will have the same number of presents under the tree, usually 7-10 each. I don't try to spend the same amount on each child because they don't know what things cost, but they will know if one of them gets 3 gifts and the others get 7, KWIM.
She sounds like she's about the same size as my daughter. If so she could probably wear a 3/4 in bottoms and just depending on how she like to wear her shirts she could wear anything from a XS to a M.
I keep bandaids, neosporin, and a alcohol wipes in my van (3 kids) so I'm sure they'll be there on BF but I'm not about to carry around a first aid kit. Just tough it out, lol.
I participated last year, I was also an elf. I recieved a great gift and ornament last year also. Everyone seemed to put alot of thought into everything. I look forward to this year. :)