1. Gia's Gopi was not comfortable with any English words, except thank you, while Devo's Gopi is pretty confident with English and uses it very frequently
2. Gia's Gopi was in love with Ahem and would blush and sparkle whenever Aham was around, while Devo's Gopi looks more like a newly wed who still has to grow her bond with her husband
3. Gia's Gopi was strong and confident in spite of her timid nature, while Devo's Gopi is a lot more timid and scared
4. Gia's Gopi had a naiveness to her , while Devo's Gopi is a more mature, grown up version
5. Devo's Gopi has a lingering sadness, melancholy to her that adds depth to her character, while Gia's Gopi was much more childlike.
The purpose of this post is not to compare the two actors. I just want to point out the two actors seem to portray two different characters. Seems like Gopi has died and Kokila has got Ahem married to another girl similar to Gopi, who is a completely different person and has a character of her own that is not Gopi
.