"His or her" would technically be the best fit, since it is acknowledging both genders, but it is very common to use "their" any most people wouldn't consider it wrong. <span />
Because they are like pictures in a book. To send a formal message or whatever it maybe you want to write formally. Emojis are used for friends and close people. Not for bosses, teachers, or any type of authority figure.
1) a run on sentence
2) add a verb after Wanda
