Is egg-laying female fully matured?

[ramona]

My new cobalt blue that is about 3 and 1/2 inches long excluding tail surprised me by laying eggs last night! (this is the one I thought might be male, just goes 'ta show) I have been doing water changes like crazy and doing frequent feedings hoping that she would add some size and round out a little more, so my question is this: If she's mature enough to lay eggs can she grow or fill out anymore? I unfortunately know nothing of her age.
thanks

[ramona]

Here is a pic if that helps.

[ShinShin]

She may be older than her size indicates.

[Carol_Roberts]

She is an adult. You may get her to fill out more (thicker body), but shape will not change much.