I have no clue how old Trina is but she is definitely a full sized cat. Idk if Angel was from her 1st litter or if she has had others. Idk even know if Angel has siblings. She does play with Angel and likes toys on a stick and toy mice. As soon as I can get a TNR voucher she will be fixed.She's beautiful. However, she doesn't look much older than a kitten herself.