Should I date someone 8 years elder than me ?

This might sound weird to a lot of people but I met this woman at my Gym , we somehow became friends , we workout every morning and we developed a bond , we consider each other as friends and she is quite chill and fun to hangout with.

We have been on drives , getting coffee after the Gym and then we started going to cafes and other hangout spots on weekends , she used to be an Air Hostess but now works a desk job in the same airline .

We recently were having coffee after the Gym and her sister with her 6 month old daughter came to pick her up from the shop and she even introduced me to her sister as her friend .

She says she isn't interested in marriage and having a child(which is ironic since she is obsessed with her niece) since she was engaged when she was 29 but her fiancé called it off because of her job .

Her birthday is coming up and she is celebrating that with friends and family and wants me to come there as well and she said that her family would love me , what does that mean ?

The coffee shop we go to has its parking at the other side of the road so somehow after parking the car while crossing the road we started holding hands and it became a thing .

Am I overthinking ? Is she getting attached ? Is this friends ? What should I gift her?