Whichever way she means it, I'll say yes

She’s 30 years old, artists. THIRTY. Stop with the overboard wrinkles.

Magaroja said:

She’s 30 years old, artists. THIRTY. Stop with the overboard wrinkles.

Sorry, in Animeland anyone over the age of 19 is officially a senior citizen, and will be lucky to live past the next 10 years. Even if they do, they're completely useless to society and unable to do more than watch as 15 year olds solve all of their problems, even when it relates to extremely complicated and nuanced things like politics, religion, and militarism.

Magaroja said:

She’s 30 years old, artists. THIRTY. Stop with the overboard wrinkles.

I don't think her age has ever been confirmed 100%. Most Pokemon Wiki ages are guesstimates and never explicitly stated in official material.

And it's rare for any anime-style character to have wrinkles regardless of age. She has them in her official art and model (just one line stroke under the eyes), and here it's just two line strokes, one tiny one to left and a bigger one to the right. The rest of her proportions are slightly exaggerated so I don't see her wrinkles here being that much of a departure.

Magaroja said:

She’s 30 years old, artists. THIRTY. Stop with the overboard wrinkles.

Explain Gordie and his 4 other siblings then.
The wiki only says "30+", not exactly 30.

Magaroja said:

She’s 30 years old, artists. THIRTY. Stop with the overboard wrinkles.

The wiki only says "30+" and she's probably a lot older if Gordie is anything to go by - Gordie looks like he's in his 20s at least, so for Melony to be literally only 30, she would have had to have given birth to Gordie before she was 10.

XionGaTaosenai said:

The wiki only says "30+" and she's probably a lot older if Gordie is anything to go by - Gordie looks like he's in his 20s at least, so for Melony to be literally only 30, she would have had to have given birth to Gordie before she was 10.

She’s probably between 35-40. Either way I would never deny her. She might teach me a few thing . . .

There's no official age for the character but if Gordie anything to go by she's at least late 36-40. Also this is not that much different than how she looks in Twilight wings