What is wrong with the Palmer family - all lying like mad about their true ages, and Aaron getting unjustified grief about the alleged "huge" age difference as if he's taken advantage of some poor inexperienced child.
Faye Palmer of Tamworth is listed on the electoral register in 2002 when you have to be at least 16 to be included on it so you she would have turned 17 in that year. That makes her in her mid 20s now

That must make Jemma in her mid 30s and she looks every day of it.
Seems lying comes naturally to the Palmer girls.