There is nothing weird about the way you feel. i was also the youngest, very close to my mom and took care of her while she was dying . i felt the same way, i kissed her many times in the casket. she was my mother and i felt i needed to. your feeling about her being cold in the ground will start to get less and less, i know mine did. it just takes time, i didn't believe this in the beginning but it does help. lori